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33 vulnerabilities found for a702r by totolink
VAR-202509-0188
Vulnerability from variot - Updated: 2025-09-27 23:37A vulnerability was found in TOTOLINK A702R 4.0.0-B20211108.1423. This vulnerability affects the function sub_4466F8 of the file /boafrm/formOneKeyAccessButton. Performing manipulation of the argument submit-url results in buffer overflow. The attack may be initiated remotely. The exploit has been made public and could be used. TOTOLINK of A702R The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. The TOTOLINK A702R is a wireless router manufactured by China's TOTOLINK Electronics, primarily used for home network connectivity and signal coverage.
The TOTOLINK A702R suffers from a buffer overflow vulnerability caused by a failure to properly validate the length of input data in the submit-url parameter in the file /boafrm/formOneKeyAccessButton. An attacker could exploit this vulnerability to execute arbitrary code or cause a denial of service
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VAR-202509-0003
Vulnerability from variot - Updated: 2025-09-26 23:50A vulnerability was detected in TOTOLINK A702R 4.0.0-B20211108.1423. Affected by this vulnerability is the function sub_4162DC of the file /boafrm/formFilter. The manipulation of the argument ip6addr results in buffer overflow. It is possible to launch the attack remotely. The exploit is now public and may be used. TOTOLINK of A702R The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. The TOTOLINK A702R is a wireless router manufactured by China's TOTOLINK Electronics, primarily used for home network connectivity and signal coverage. This vulnerability could allow an attacker to execute arbitrary code or cause a denial of service
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Vulnerability from variot - Updated: 2025-09-26 23:37A vulnerability was determined in TOTOLINK A702R 4.0.0-B20211108.1423. This issue affects the function sub_418030 of the file /boafrm/formParentControl. Executing manipulation of the argument submit-url can lead to buffer overflow. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. TOTOLINK of A702R The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. The TOTOLINK A702R is a wireless router manufactured by China's TOTOLINK Electronics, primarily used for home network connectivity and signal coverage.
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Vulnerability from variot - Updated: 2025-09-10 23:30A flaw has been found in TOTOLINK A702R 4.0.0-B20211108.1423. Affected by this issue is the function sub_419BE0 of the file /boafrm/formIpQoS. This manipulation of the argument mac causes buffer overflow. The attack can be initiated remotely. The exploit has been published and may be used. TOTOLINK of A702R The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. The TOTOLINK A702R is a wireless router manufactured by China's TOTOLINK Electronics, primarily used for home network connectivity and signal coverage.
The TOTOLINK A702R suffers from a buffer overflow vulnerability caused by a failure to properly validate the length of input data in the parameter mac in the file /boafrm/formIpQoS. This vulnerability could allow an attacker to execute arbitrary code on the system or cause a denial of service
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VAR-202509-0071
Vulnerability from variot - Updated: 2025-09-10 23:28A vulnerability has been found in TOTOLINK A702R 4.0.0-B20211108.1423. This affects the function sub_4162DC of the file /boafrm/formFilter. Such manipulation of the argument ip6addr leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. The TOTOLINK A702R is a wireless router manufactured by China's TOTOLINK Electronics, primarily used for home network connectivity and signal coverage. This vulnerability could allow an attacker to execute arbitrary code or cause a denial of service (DoS) on the system
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VAR-202507-2551
Vulnerability from variot - Updated: 2025-08-15 23:10A vulnerability, which was classified as critical, was found in TOTOLINK A702R 4.0.0-B20230721.1521. Affected is an unknown function of the file /boafrm/formFilter of the component HTTP POST Request Handler. The manipulation of the argument ip6addr leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Service operation interruption (DoS) It may be in a state. The TOTOLINK A702R is a wireless router manufactured by China's Jiweng Electronics (TOTOLINK), primarily used for home network connectivity and signal coverage. An attacker could exploit this vulnerability to cause a denial of service or execute arbitrary code
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VAR-202507-2554
Vulnerability from variot - Updated: 2025-08-15 05:32A vulnerability was found in TOTOLINK A702R 4.0.0-B20230721.1521. It has been classified as critical. This affects an unknown part of the file /boafrm/formPortFw of the component HTTP POST Request Handler. The manipulation of the argument service_type leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. The TOTOLINK A702R is a router manufactured by TOTOLINK. An attacker could exploit this vulnerability by remotely crafting malicious data to trigger a buffer overflow, causing a denial of service or arbitrary code execution
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Vulnerability from variot - Updated: 2025-08-09 19:36A vulnerability was found in TOTOLINK A702R 4.0.0-B20230721.1521. It has been declared as critical. This vulnerability affects unknown code of the file /boafrm/formWlanMultipleAP of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. The TOTOLINK A702R is a wireless router from TOTOLINK. An attacker could exploit this vulnerability by remotely crafting malicious data to trigger a buffer overflow, potentially causing a denial of service or arbitrary code execution
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VAR-202507-2593
Vulnerability from variot - Updated: 2025-08-06 23:20A vulnerability has been found in TOTOLINK A702R 4.0.0-B20230721.1521 and classified as critical. Affected by this vulnerability is an unknown functionality of the file /boafrm/formIpQoS of the component HTTP POST Request Handler. The manipulation of the argument mac leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. The TOTOLINK A702R is a wireless router manufactured by the Chinese company TOTOLINK, primarily used for home network connectivity and signal coverage. This vulnerability could allow an attacker to execute arbitrary code or cause the device to crash
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VAR-202507-2722
Vulnerability from variot - Updated: 2025-08-05 23:09A vulnerability was found in TOTOLINK A702R 4.0.0-B20230721.1521 and classified as critical. Affected by this issue is some unknown functionality of the file /boafrm/formOneKeyAccessButton of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. The TOTOLINK A702R is a wireless router model released by China-based Jiong Electronics. Key features include dual-band (2.4GHz/5.8GHz) network connectivity, a maximum transfer rate of 1200Mbps, four 5dBi antennas, and a built-in firewall. An attacker could exploit this vulnerability to cause a denial of service or execute arbitrary code
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Vulnerability from variot - Updated: 2025-07-26 23:04A vulnerability was found in TOTOLINK A702R 4.0.0-B20230721.1521. It has been declared as critical. This vulnerability affects unknown code of the file /boafrm/formSysLog of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. TOTOLINK A702r is a router device from China's TOTOLINK Electronics. The vulnerability is caused by the submit-url parameter in the /boafrm/formSysLog file failing to properly verify the length of the input data. Remote attackers can exploit this vulnerability to execute arbitrary code on the system or cause a denial of service attack
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Vulnerability from variot - Updated: 2025-07-18 23:26A vulnerability has been found in TOTOLINK A702R 4.0.0-B20230721.1521 and classified as critical. This vulnerability affects unknown code of the file /boafrm/formIpv6Setup of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. TOTOLINK A702R is a router device produced by China's Jiweng Electronics (TOTOLINK) company.
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VAR-202507-0198
Vulnerability from variot - Updated: 2025-07-15 23:39A vulnerability classified as critical was found in TOTOLINK A702R 4.0.0-B20230721.1521. Affected by this vulnerability is an unknown functionality of the file /boafrm/formParentControl of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. TOTOLINK A702r is a router device from China's TOTOLINK Electronics. The vulnerability is caused by the failure of the parameter submit-url in the file /boafrm/formParentControl to correctly verify the length of the input data. Remote attackers can exploit this vulnerability to execute arbitrary code on the system or cause a denial of service attack
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VAR-202506-1121
Vulnerability from variot - Updated: 2025-07-13 19:35A vulnerability was found in TOTOLINK A702R, A3002R, A3002RU and EX1200T 3.0.0-B20230809.1615/4.0.0-B20230531.1404/4.0.0-B20230721.1521/4.1.2cu.5232_B20210713. It has been classified as critical. Affected is an unknown function of the file /boafrm/formIPv6Addr of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. A3002RU firmware, A3002R firmware, A702R firmware etc. TOTOLINK The product contains a classic buffer overflow vulnerability.Service operation interruption (DoS) It may be in a state
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Vulnerability from variot - Updated: 2025-07-10 22:57A vulnerability classified as critical was found in TOTOLINK A702R up to 4.0.0-B20230721.1521. Affected by this vulnerability is an unknown functionality of the file /boafrm/formWlSiteSurvey of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. TOTOLINK A702R is a router device produced by China's Jiweng Electronics (TOTOLINK) company. Attackers can exploit this vulnerability to cause a denial of service or execute arbitrary code on the device
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VAR-202505-1741
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VAR-202505-1856
Vulnerability from variot - Updated: 2025-05-29 23:47A vulnerability was found in TOTOLINK A702R, A3002R and A3002RU 3.0.0-B20230809.1615 and classified as critical. This issue affects some unknown processing of the file /boafrm/formNtp of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R firmware, A3002R firmware, A3002RU The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state
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Vulnerability from variot - Updated: 2025-05-29 23:45A vulnerability classified as critical was found in TOTOLINK A702R, A3002R and A3002RU 3.0.0-B20230809.1615. Affected by this vulnerability is the function sub_40BE30 of the file /boafrm/formStats of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R firmware, A3002R firmware, A3002RU The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state
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Vulnerability from variot - Updated: 2025-05-29 23:42A vulnerability classified as critical was found in TOTOLINK A702R, A3002R and A3002RU 3.0.0-B20230809.1615. This vulnerability affects unknown code of the file /boafrm/formDMZ of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R firmware, A3002R firmware, A3002RU The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state
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VAR-202505-1809
Vulnerability from variot - Updated: 2025-05-29 23:42A vulnerability was found in TOTOLINK A702R, A3002R and A3002RU 3.0.0-B20230809.1615. It has been rated as critical. Affected by this issue is the function submit-url of the file /boafrm/formReflashClientTbl of the component HTTP POST Request Handler. The manipulation leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R firmware, A3002R firmware, A3002RU The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state
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Vulnerability from variot - Updated: 2025-05-29 23:41A vulnerability, which was classified as critical, was found in TOTOLINK A702R, A3002R and A3002RU 3.0.0-B20230809.1615. Affected is an unknown function of the file /boafrm/formSaveConfig of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R firmware, A3002R firmware, A3002RU The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state
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VAR-202505-1845
Vulnerability from variot - Updated: 2025-05-29 23:41A vulnerability has been found in TOTOLINK A702R, A3002R and A3002RU 3.0.0-B20230809.1615 and classified as critical. This vulnerability affects unknown code of the file /boafrm/formDosCfg of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R firmware, A3002R firmware, A3002RU The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state
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VAR-202505-1822
Vulnerability from variot - Updated: 2025-05-29 23:35A vulnerability classified as critical has been found in TOTOLINK A702R, A3002R and A3002RU 3.0.0-B20230809.1615. This affects an unknown part of the file /boafrm/formWsc of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R firmware, A3002R firmware, A3002RU The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state
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VAR-202505-1787
Vulnerability from variot - Updated: 2025-05-29 23:33A vulnerability, which was classified as critical, has been found in TOTOLINK A702R, A3002R and A3002RU 3.0.0-B20230809.1615. Affected by this issue is some unknown functionality of the file /boafrm/formSysCmd of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R firmware, A3002R firmware, A3002RU The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state
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VAR-202505-1808
Vulnerability from variot - Updated: 2025-05-29 23:33A vulnerability, which was classified as critical, has been found in TOTOLINK A702R, A3002R and A3002RU 3.0.0-B20230809.1615. This issue affects some unknown processing of the file /boafrm/formWirelessTbl of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R firmware, A3002R firmware, A3002RU The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state
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Vulnerability from variot - Updated: 2025-05-29 23:33A vulnerability was found in TOTOLINK A702R, A3002R and A3002RU 3.0.0-B20230809.1615. It has been classified as critical. Affected is an unknown function of the file /boafrm/formSetLg of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R firmware, A3002R firmware, A3002RU The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state
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VAR-202505-1820
Vulnerability from variot - Updated: 2025-05-29 23:29A vulnerability, which was classified as critical, was found in TOTOLINK A702R, A3002R and A3002RU 3.0.0-B20230809.1615. This affects an unknown part of the file /boafrm/formSiteSurveyProfile of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R firmware, A3002R firmware, A3002RU The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state
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VAR-202101-0395
Vulnerability from variot - Updated: 2024-11-23 23:07Directory Indexing in Login Portal of Login Portal of TOTOLINK-A702R-V1.0.0-B20161227.1023 allows attacker to access /icons/ directories via GET Parameter. TOTOLINK-A702R Contains vulnerabilities in externally accessible files or directories.Information may be obtained. Totolink A702r is a router device of China Totolink Company. No detailed vulnerability details are currently provided
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VAR-202001-0634
Vulnerability from variot - Updated: 2024-11-23 21:51On certain TOTOLINK Realtek SDK based routers, the CAPTCHA text can be retrieved via an {"topicurl":"setting/getSanvas"} POST to the boafrm/formLogin URI, leading to a CAPTCHA bypass. (Also, the CAPTCHA text is not needed once the attacker has determined valid credentials. The attacker can perform router actions via HTTP requests with Basic Authentication.) This affects A3002RU through 2.0.0, A702R through 2.1.3, N301RT through 2.1.6, N302R through 3.4.0, N300RT through 3.4.0, N200RE through 4.0.0, N150RT through 3.4.0, and N100RE through 3.4.0. plural TOTOLINK The product contains an authentication vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be put into a state. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ MULTIPLE VULNERABILITIES IN SEVERAL SERIES OF REALTEK SDK BASED ROUTERS (TOTOLINK AND MANY OTHER)
Blazej Adamczyk (br0x)
blazej.adamczyk@gmail.com
https://sploit.tech/
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
11.12.2019
1 Sensitive data disclosure and incorrect access control in several series of Realtek SDK based routers ══════════════════════════════════════════════════════════════════════════
CVE: CVE-2019-19822
SDK vendor: Realtek
Device vendor: TOTOLINK, Sapido, CIK Telecom, Fibergate Inc., MAX-C300N, T-BROAD and possibly others..
Product: Realtek SDK based routers backed by Boa HTTP server (and possibly others) and using apmib library for memory management.
Boa Version: <= Boa/0.94.14rc21 SDK Version: < 2020/02/15
Description: Realtek SDK based routers which use form based instead HTTP Basic authentication (that includes Realtek APMIB 0.11f and Boa HTTP server 0.94.14rc21) allows remote attackers to retrieve the configuration, including sensitive data (usernames and passwords).
This affects: • TOTOLINK A3002RU through 2.0.0, • TOTOLINK 702R through 2.1.3, • TOTOLINK N301RT through 2.1.6, • TOTOLINK N302R through 3.4.0, • TOTOLINK N300RT through 3.4.0, • TOTOLINK N200RE through 4.0.0, • TOTOLINK N150RT through 3.4.0, and • TOTOLINK N100RE through 3.4.0; • Rutek RTK 11N AP through 2019-12-12; • Sapido GR297n through 2019-12-12; • CIK TELECOM MESH ROUTER through 2019-12-12; • KCTVJEJU Wireless AP through 2019-12-12; • Fibergate FGN-R2 through 2019-12-12; • Hi-Wifi MAX-C300N through 2019-12-12; • HCN MAX-C300N through 2019-12-12; • T-broad GN-866ac through 2019-12-12; • Coship EMTA AP through 2019-12-12; and • IO-Data WN-AC1167R through 2019-12-12; and • possibly others.
Technical details: The apmib library at some point of initialization dumps the whole memory contents the file /web/config.dat. This folder is actually used by the boa http server as index directory. Additionally if the router is configured for form-based authentication the access control verifies credentials only for some URLs but ".dat" files are not restricted.
PoC: ┌──── │ $ curl http://routerip/config.dat └────
2 Password stored in plaintext in Realtek SDK based routers ═══════════════════════════════════════════════════════════
CVE: CVE-2019-19823
SDK vendor: Realtek
Device vendor: TOTOLINK, Sapido, CIK Telecom, Fibergate Inc., MAX-C300N, T-BROAD and possibly others..
Product: Realtek SDK based routers backed by Boa HTTP server (and possibly others) and using apmib library for memory management.
Boa Version: <= Boa/0.94.14rc21 SDK Version: < 2020/02/15
Description: Realtek SDK based routers (that includes Realtek APMIB 0.11f and Boa HTTP server 0.94.14rc21) store passwords in plaintext.
This affects: • TOTOLINK A3002RU through 2.0.0, • TOTOLINK 702R through 2.1.3, • TOTOLINK N301RT through 2.1.6, • TOTOLINK N302R through 3.4.0, • TOTOLINK N300RT through 3.4.0, • TOTOLINK N200RE through 4.0.0, • TOTOLINK N150RT through 3.4.0, and • TOTOLINK N100RE through 3.4.0; • Rutek RTK 11N AP through 2019-12-12; • Sapido GR297n through 2019-12-12; • CIK TELECOM MESH ROUTER through 2019-12-12; • KCTVJEJU Wireless AP through 2019-12-12; • Fibergate FGN-R2 through 2019-12-12; • Hi-Wifi MAX-C300N through 2019-12-12; • HCN MAX-C300N through 2019-12-12; • T-broad GN-866ac through 2019-12-12; • Coship EMTA AP through 2019-12-12; and • IO-Data WN-AC1167R through 2019-12-12; and • possibly others.
Technical details: Data stored in memory in COMPCS (apmib library) format contains device administration and other passwords in plaintext. The apmib library additionally at some point of initialization dumps the whole memory contents the file /web/config.dat which might be used to easily retrieve user passwords.
3 Code execution in several TOTOLINK routers ════════════════════════════════════════════
CVE: CVE-2019-19824
Vendor: TOTOLINK
Product: TOTOLINK Realtek SDK based routers
Boa Version: <= Boa/0.94.14rc21
Description: On several Realted SDK based TOTOLINK routers, an authenticated attacker may execute arbitrary OS commands via the sysCmd parameter to the boafrm/formSysCmd URI, even if the GUI (syscmd.htm) is not available. This allows for full control over the device's internals.
This affects: • A3002RU through 2.0.0, • A702R through 2.1.3, • N301RT through 2.1.6, • N302R through 3.4.0, • N300RT through 3.4.0, • N200RE through 4.0.0, • N150RT through 3.4.0, • N100RE through 3.4.0, and • possibly others.
PoC: ┌──── │ $ curl 'http://routerip/boafrm/formSysCmd' --user "admin:password" │ --data 'submit-url=%2Fsyscmd.htm&sysCmdselect=5&sysCmdselects=0& │ save_apply=Run+Command&sysCmd=cp%20%2Fetc%2Fpasswd%20%2Fweb%2Fxxxx.dat' └────
4 Incorrectly implemented captcha protection in TOTOLINK routers ════════════════════════════════════════════════════════════════
CVE: CVE-2019-19825
Vendor: TOTOLINK
Product: TOTOLINK Realtek SDK based routers
Boa Version: <= Boa/0.94.14rc21
Description: Guessable captcha vulnerability (CWE-804) in several series of TOTOLINK routers allows a remote attacker to automatically login to the router without reading and providing real captcha.
The following command returns captcha in plain text: ┌──── │ $ curl 'http://routerip/boafrm/formLogin' --data '{"topicurl":"setting/getSanvas"}' └────
Additionally by using the HTTP Basic in a HEADER the attacker can execute router actions without providing captcha at all.
This affects: • A3002RU through 2.0.0, • A702R through 2.1.3, • N301RT through 2.1.6, • N302R through 3.4.0, • N300RT through 3.4.0, • N200RE through 4.0.0, • N150RT through 3.4.0, • N100RE through 3.4.0, and • possibly others.
5 Exploiting all together on TOTOLINK routers ═════════════════════════════════════════════
CVSS v3 socre: 9.6 AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H (assuming Administrative Access on WAN is enabled the score is 10.0)
Exploiting all the vulnerabilities together allows a remote unauthenticated attacker to execute any code with root permissions and reveal administration password.
The only thing that is needed is the access to router administration interface (either access to local network or Administrative Access on WAN enabled)
Description, video and possibly an exploit: https://sploit.tech/2019/12/16/Realtek-TOTOLINK.html
Timeline: • 17.12.2019 - Contacted all identified vendors, i.e. TOTOLINK, CIK Telecom, Sapido, Fibergate and Coship. • 18.12.2019 - received TOTOLINK first line support response totally not related to my message and showing me how to log into my router. I responded right away and asked to forward the message to technical/security team. • 19.12.2019 - received response from CIK Telecom stating that the routers support encryption (SIC!). I replied asking to forward the message to technical/security team. • 19.12.20219 - CIK Telecom responded that for further assistance I should contact them over the phone. I replied that I need to explain the details as a written message as this is technical. • 27.12.2019, 06.01.2020 - I resent the messages to TOTOLINK and CIK Telecom but none have replied till the date of disclosure. • 06.01.2020 - I finally contacted Realtek as the Supplier of the SDK. • 10.01.2020 - I got a response and I replied with encrypted details on the bugs. • 14-15.01.2020 - Realtek replied that the issue with dumping configuration by apmib exists but it is not directly exploitable in the defualt SDK configuration becuase it uses HTTP Basic authentication which protects all URLs. They agreed however that most of the Vendors modify the software including authentication mechanism thus making it vulnerable. • 23.01.2020 - Realtek responded that they are goining to fix the issue with dumping configuration to the config.dat file in version released on 15.02.2020. They also said that after fixing the issue the impact of storing password in plaintext is less significant thus they will not fix the CVE-2019-19823 yet but will try to fix it in the future.
Temporary workaround: Unfortunately I did not get any good information from real vendors like TOTOLINK and for now I would suggest to disable administration interface from WAN and restricting LAN router administration interface access using some kind of firewall if possible.
Credit: Blazej Adamczyk | blazej.adamczyk@gmail.com | http://sploit.tech/
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"data": "On certain TOTOLINK Realtek SDK based routers, the CAPTCHA text can be retrieved via an {\"topicurl\":\"setting/getSanvas\"} POST to the boafrm/formLogin URI, leading to a CAPTCHA bypass. (Also, the CAPTCHA text is not needed once the attacker has determined valid credentials. The attacker can perform router actions via HTTP requests with Basic Authentication.) This affects A3002RU through 2.0.0, A702R through 2.1.3, N301RT through 2.1.6, N302R through 3.4.0, N300RT through 3.4.0, N200RE through 4.0.0, N150RT through 3.4.0, and N100RE through 3.4.0. plural TOTOLINK The product contains an authentication vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be put into a state. \u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\n MULTIPLE VULNERABILITIES IN SEVERAL SERIES OF\n REALTEK SDK BASED ROUTERS (TOTOLINK AND MANY\n OTHER)\n\n\n Blazej Adamczyk (br0x)\n blazej.adamczyk@gmail.com\n https://sploit.tech/\n \u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\n\n\n 11.12.2019\n\n\n\n\n\n1 Sensitive data disclosure and incorrect access control in several series\nof Realtek SDK based routers\n\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\n CVE: CVE-2019-19822\n\n SDK vendor: Realtek\n\n Device vendor: TOTOLINK, Sapido, CIK Telecom, Fibergate Inc.,\n MAX-C300N, T-BROAD and possibly others.. \n\n Product: Realtek SDK based routers backed by Boa HTTP server (and\n possibly others) and using apmib library for memory management. \n\n Boa Version: \u003c= Boa/0.94.14rc21 SDK Version: \u003c 2020/02/15\n\n Description: Realtek SDK based routers which use form based instead\n HTTP Basic authentication (that includes Realtek APMIB 0.11f and Boa\n HTTP server 0.94.14rc21) allows remote attackers to retrieve the\n configuration, including sensitive data (usernames and passwords). \n\n This affects:\n \u2022 TOTOLINK A3002RU through 2.0.0,\n \u2022 TOTOLINK 702R through 2.1.3,\n \u2022 TOTOLINK N301RT through 2.1.6,\n \u2022 TOTOLINK N302R through 3.4.0,\n \u2022 TOTOLINK N300RT through 3.4.0,\n \u2022 TOTOLINK N200RE through 4.0.0,\n \u2022 TOTOLINK N150RT through 3.4.0, and\n \u2022 TOTOLINK N100RE through 3.4.0;\n \u2022 Rutek RTK 11N AP through 2019-12-12;\n \u2022 Sapido GR297n through 2019-12-12;\n \u2022 CIK TELECOM MESH ROUTER through 2019-12-12;\n \u2022 KCTVJEJU Wireless AP through 2019-12-12;\n \u2022 Fibergate FGN-R2 through 2019-12-12;\n \u2022 Hi-Wifi MAX-C300N through 2019-12-12;\n \u2022 HCN MAX-C300N through 2019-12-12;\n \u2022 T-broad GN-866ac through 2019-12-12;\n \u2022 Coship EMTA AP through 2019-12-12; and\n \u2022 IO-Data WN-AC1167R through 2019-12-12; and\n \u2022 possibly others. \n\n Technical details: The apmib library at some point of initialization\n dumps the whole memory contents the file /web/config.dat. This folder\n is actually used by the boa http server as index directory. \n Additionally if the router is configured for form-based authentication\n the access control verifies credentials only for some URLs but \".dat\"\n files are not restricted. \n\n PoC:\n \u250c\u2500\u2500\u2500\u2500\n \u2502 $ curl http://routerip/config.dat\n \u2514\u2500\u2500\u2500\u2500\n\n\n2 Password stored in plaintext in Realtek SDK based routers\n\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\n CVE: CVE-2019-19823\n\n SDK vendor: Realtek\n\n Device vendor: TOTOLINK, Sapido, CIK Telecom, Fibergate Inc.,\n MAX-C300N, T-BROAD and possibly others.. \n\n Product: Realtek SDK based routers backed by Boa HTTP server (and\n possibly others) and using apmib library for memory management. \n\n Boa Version: \u003c= Boa/0.94.14rc21 SDK Version: \u003c 2020/02/15\n\n Description: Realtek SDK based routers (that includes Realtek APMIB\n 0.11f and Boa HTTP server 0.94.14rc21) store passwords in plaintext. \n\n This affects:\n \u2022 TOTOLINK A3002RU through 2.0.0,\n \u2022 TOTOLINK 702R through 2.1.3,\n \u2022 TOTOLINK N301RT through 2.1.6,\n \u2022 TOTOLINK N302R through 3.4.0,\n \u2022 TOTOLINK N300RT through 3.4.0,\n \u2022 TOTOLINK N200RE through 4.0.0,\n \u2022 TOTOLINK N150RT through 3.4.0, and\n \u2022 TOTOLINK N100RE through 3.4.0;\n \u2022 Rutek RTK 11N AP through 2019-12-12;\n \u2022 Sapido GR297n through 2019-12-12;\n \u2022 CIK TELECOM MESH ROUTER through 2019-12-12;\n \u2022 KCTVJEJU Wireless AP through 2019-12-12;\n \u2022 Fibergate FGN-R2 through 2019-12-12;\n \u2022 Hi-Wifi MAX-C300N through 2019-12-12;\n \u2022 HCN MAX-C300N through 2019-12-12;\n \u2022 T-broad GN-866ac through 2019-12-12;\n \u2022 Coship EMTA AP through 2019-12-12; and\n \u2022 IO-Data WN-AC1167R through 2019-12-12; and\n \u2022 possibly others. \n\n Technical details: Data stored in memory in COMPCS (apmib library)\n format contains device administration and other passwords in\n plaintext. The apmib library additionally at some point of\n initialization dumps the whole memory contents the file\n /web/config.dat which might be used to easily retrieve user passwords. \n\n\n3 Code execution in several TOTOLINK routers\n\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\n CVE: CVE-2019-19824\n\n Vendor: TOTOLINK\n\n Product: TOTOLINK Realtek SDK based routers\n\n Boa Version: \u003c= Boa/0.94.14rc21\n\n Description: On several Realted SDK based TOTOLINK routers, an\n authenticated attacker may execute arbitrary OS commands via the\n sysCmd parameter to the boafrm/formSysCmd URI, even if the GUI\n (syscmd.htm) is not available. This allows for full control over the\n device\u0027s internals. \n\n This affects:\n \u2022 A3002RU through 2.0.0,\n \u2022 A702R through 2.1.3,\n \u2022 N301RT through 2.1.6,\n \u2022 N302R through 3.4.0,\n \u2022 N300RT through 3.4.0,\n \u2022 N200RE through 4.0.0,\n \u2022 N150RT through 3.4.0,\n \u2022 N100RE through 3.4.0, and\n \u2022 possibly others. \n\n PoC:\n \u250c\u2500\u2500\u2500\u2500\n \u2502 $ curl \u0027http://routerip/boafrm/formSysCmd\u0027 --user \"admin:password\" \n \u2502 --data \u0027submit-url=%2Fsyscmd.htm\u0026sysCmdselect=5\u0026sysCmdselects=0\u0026\n \u2502 save_apply=Run+Command\u0026sysCmd=cp%20%2Fetc%2Fpasswd%20%2Fweb%2Fxxxx.dat\u0027\n \u2514\u2500\u2500\u2500\u2500\n\n\n4 Incorrectly implemented captcha protection in TOTOLINK routers\n\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\n CVE: CVE-2019-19825\n\n Vendor: TOTOLINK\n\n Product: TOTOLINK Realtek SDK based routers\n\n Boa Version: \u003c= Boa/0.94.14rc21\n\n Description: Guessable captcha vulnerability (CWE-804) in several\n series of TOTOLINK routers allows a remote attacker to automatically\n login to the router without reading and providing real captcha. \n\n The following command returns captcha in plain text:\n \u250c\u2500\u2500\u2500\u2500\n \u2502 $ curl \u0027http://routerip/boafrm/formLogin\u0027 --data \u0027{\"topicurl\":\"setting/getSanvas\"}\u0027\n \u2514\u2500\u2500\u2500\u2500\n\n Additionally by using the HTTP Basic in a HEADER the attacker can\n execute router actions without providing captcha at all. \n\n This affects:\n \u2022 A3002RU through 2.0.0,\n \u2022 A702R through 2.1.3,\n \u2022 N301RT through 2.1.6,\n \u2022 N302R through 3.4.0,\n \u2022 N300RT through 3.4.0,\n \u2022 N200RE through 4.0.0,\n \u2022 N150RT through 3.4.0,\n \u2022 N100RE through 3.4.0, and\n \u2022 possibly others. \n\n\n5 Exploiting all together on TOTOLINK routers\n\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\n CVSS v3 socre: 9.6 AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H (assuming\n Administrative Access on WAN is enabled the score is 10.0)\n\n Exploiting all the vulnerabilities together allows a remote\n unauthenticated attacker to execute any code with root permissions and\n reveal administration password. \n\n The only thing that is needed is the access to router administration\n interface (either access to local network or Administrative Access on\n WAN enabled)\n\n Description, video and possibly an exploit:\n https://sploit.tech/2019/12/16/Realtek-TOTOLINK.html\n\n Timeline:\n \u2022 17.12.2019 - Contacted all identified vendors, i.e. TOTOLINK, CIK\n Telecom, Sapido, Fibergate and Coship. \n \u2022 18.12.2019 - received TOTOLINK first line support response totally\n not related to my message and showing me how to log into my router. \n I responded right away and asked to forward the message to\n technical/security team. \n \u2022 19.12.2019 - received response from CIK Telecom stating that the\n routers support encryption (SIC!). I replied asking to forward the\n message to technical/security team. \n \u2022 19.12.20219 - CIK Telecom responded that for further assistance I\n should contact them over the phone. I replied that I need to explain\n the details as a written message as this is technical. \n \u2022 27.12.2019, 06.01.2020 - I resent the messages to TOTOLINK and CIK\n Telecom but none have replied till the date of disclosure. \n \u2022 06.01.2020 - I finally contacted Realtek as the Supplier of the SDK. \n \u2022 10.01.2020 - I got a response and I replied with encrypted details\n on the bugs. \n \u2022 14-15.01.2020 - Realtek replied that the issue with dumping\n configuration by apmib exists but it is not directly exploitable in\n the defualt SDK configuration becuase it uses HTTP Basic\n authentication which protects all URLs. They agreed however that\n most of the Vendors modify the software including authentication\n mechanism thus making it vulnerable. \n \u2022 23.01.2020 - Realtek responded that they are goining to fix the\n issue with dumping configuration to the config.dat file in version\n released on 15.02.2020. They also said that after fixing the issue\n the impact of storing password in plaintext is less significant thus\n they will not fix the CVE-2019-19823 yet but will try to fix it in\n the future. \n\n Temporary workaround: Unfortunately I did not get any good information\n from real vendors like TOTOLINK and for now I would suggest to disable\n administration interface from WAN and restricting LAN router\n administration interface access using some kind of firewall if\n possible. \n\n Credit: Blazej Adamczyk | blazej.adamczyk@gmail.com | http://sploit.tech/\n",
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VAR-202001-0631
Vulnerability from variot - Updated: 2024-11-23 21:51A certain router administration interface (that includes Realtek APMIB 0.11f for Boa 0.94.14rc21) allows remote attackers to retrieve the configuration, including sensitive data (usernames and passwords). This affects TOTOLINK A3002RU through 2.0.0, A702R through 2.1.3, N301RT through 2.1.6, N302R through 3.4.0, N300RT through 3.4.0, N200RE through 4.0.0, N150RT through 3.4.0, and N100RE through 3.4.0; Rutek RTK 11N AP through 2019-12-12; Sapido GR297n through 2019-12-12; CIK TELECOM MESH ROUTER through 2019-12-12; KCTVJEJU Wireless AP through 2019-12-12; Fibergate FGN-R2 through 2019-12-12; Hi-Wifi MAX-C300N through 2019-12-12; HCN MAX-C300N through 2019-12-12; T-broad GN-866ac through 2019-12-12; Coship EMTA AP through 2019-12-12; and IO-Data WN-AC1167R through 2019-12-12. Multiple products contain vulnerabilities in insufficient protection of credentials.Information may be obtained. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ MULTIPLE VULNERABILITIES IN SEVERAL SERIES OF REALTEK SDK BASED ROUTERS (TOTOLINK AND MANY OTHER)
Blazej Adamczyk (br0x)
blazej.adamczyk@gmail.com
https://sploit.tech/
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
11.12.2019
1 Sensitive data disclosure and incorrect access control in several series of Realtek SDK based routers ══════════════════════════════════════════════════════════════════════════
CVE: CVE-2019-19822
SDK vendor: Realtek
Device vendor: TOTOLINK, Sapido, CIK Telecom, Fibergate Inc., MAX-C300N, T-BROAD and possibly others..
Product: Realtek SDK based routers backed by Boa HTTP server (and possibly others) and using apmib library for memory management.
This affects: • TOTOLINK A3002RU through 2.0.0, • TOTOLINK 702R through 2.1.3, • TOTOLINK N301RT through 2.1.6, • TOTOLINK N302R through 3.4.0, • TOTOLINK N300RT through 3.4.0, • TOTOLINK N200RE through 4.0.0, • TOTOLINK N150RT through 3.4.0, and • TOTOLINK N100RE through 3.4.0; • Rutek RTK 11N AP through 2019-12-12; • Sapido GR297n through 2019-12-12; • CIK TELECOM MESH ROUTER through 2019-12-12; • KCTVJEJU Wireless AP through 2019-12-12; • Fibergate FGN-R2 through 2019-12-12; • Hi-Wifi MAX-C300N through 2019-12-12; • HCN MAX-C300N through 2019-12-12; • T-broad GN-866ac through 2019-12-12; • Coship EMTA AP through 2019-12-12; and • IO-Data WN-AC1167R through 2019-12-12; and • possibly others.
Technical details: The apmib library at some point of initialization dumps the whole memory contents the file /web/config.dat. This folder is actually used by the boa http server as index directory. Additionally if the router is configured for form-based authentication the access control verifies credentials only for some URLs but ".dat" files are not restricted. This issue does not affect routers which use HTTP Basic authentication to secure all URLs.
PoC: ┌──── │ $ curl http://routerip/config.dat └────
2 Password stored in plaintext in Realtek SDK based routers ═══════════════════════════════════════════════════════════
CVE: CVE-2019-19823
SDK vendor: Realtek
Device vendor: TOTOLINK, Sapido, CIK Telecom, Fibergate Inc., MAX-C300N, T-BROAD and possibly others..
Product: Realtek SDK based routers backed by Boa HTTP server (and possibly others) and using apmib library for memory management.
Boa Version: <= Boa/0.94.14rc21 SDK Version: < 2020/02/15
Description: Realtek SDK based routers (that includes Realtek APMIB 0.11f and Boa HTTP server 0.94.14rc21) store passwords in plaintext.
This affects: • TOTOLINK A3002RU through 2.0.0, • TOTOLINK 702R through 2.1.3, • TOTOLINK N301RT through 2.1.6, • TOTOLINK N302R through 3.4.0, • TOTOLINK N300RT through 3.4.0, • TOTOLINK N200RE through 4.0.0, • TOTOLINK N150RT through 3.4.0, and • TOTOLINK N100RE through 3.4.0; • Rutek RTK 11N AP through 2019-12-12; • Sapido GR297n through 2019-12-12; • CIK TELECOM MESH ROUTER through 2019-12-12; • KCTVJEJU Wireless AP through 2019-12-12; • Fibergate FGN-R2 through 2019-12-12; • Hi-Wifi MAX-C300N through 2019-12-12; • HCN MAX-C300N through 2019-12-12; • T-broad GN-866ac through 2019-12-12; • Coship EMTA AP through 2019-12-12; and • IO-Data WN-AC1167R through 2019-12-12; and • possibly others.
Technical details: Data stored in memory in COMPCS (apmib library) format contains device administration and other passwords in plaintext. The apmib library additionally at some point of initialization dumps the whole memory contents the file /web/config.dat which might be used to easily retrieve user passwords.
3 Code execution in several TOTOLINK routers ════════════════════════════════════════════
CVE: CVE-2019-19824
Vendor: TOTOLINK
Product: TOTOLINK Realtek SDK based routers
Boa Version: <= Boa/0.94.14rc21
Description: On several Realted SDK based TOTOLINK routers, an authenticated attacker may execute arbitrary OS commands via the sysCmd parameter to the boafrm/formSysCmd URI, even if the GUI (syscmd.htm) is not available. This allows for full control over the device's internals.
This affects: • A3002RU through 2.0.0, • A702R through 2.1.3, • N301RT through 2.1.6, • N302R through 3.4.0, • N300RT through 3.4.0, • N200RE through 4.0.0, • N150RT through 3.4.0, • N100RE through 3.4.0, and • possibly others.
PoC: ┌──── │ $ curl 'http://routerip/boafrm/formSysCmd' --user "admin:password" │ --data 'submit-url=%2Fsyscmd.htm&sysCmdselect=5&sysCmdselects=0& │ save_apply=Run+Command&sysCmd=cp%20%2Fetc%2Fpasswd%20%2Fweb%2Fxxxx.dat' └────
4 Incorrectly implemented captcha protection in TOTOLINK routers ════════════════════════════════════════════════════════════════
CVE: CVE-2019-19825
Vendor: TOTOLINK
Product: TOTOLINK Realtek SDK based routers
Boa Version: <= Boa/0.94.14rc21
Description: Guessable captcha vulnerability (CWE-804) in several series of TOTOLINK routers allows a remote attacker to automatically login to the router without reading and providing real captcha.
The following command returns captcha in plain text: ┌──── │ $ curl 'http://routerip/boafrm/formLogin' --data '{"topicurl":"setting/getSanvas"}' └────
Additionally by using the HTTP Basic in a HEADER the attacker can execute router actions without providing captcha at all.
This affects: • A3002RU through 2.0.0, • A702R through 2.1.3, • N301RT through 2.1.6, • N302R through 3.4.0, • N300RT through 3.4.0, • N200RE through 4.0.0, • N150RT through 3.4.0, • N100RE through 3.4.0, and • possibly others.
5 Exploiting all together on TOTOLINK routers ═════════════════════════════════════════════
CVSS v3 socre: 9.6 AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H (assuming Administrative Access on WAN is enabled the score is 10.0)
Exploiting all the vulnerabilities together allows a remote unauthenticated attacker to execute any code with root permissions and reveal administration password.
The only thing that is needed is the access to router administration interface (either access to local network or Administrative Access on WAN enabled)
Description, video and possibly an exploit: https://sploit.tech/2019/12/16/Realtek-TOTOLINK.html
Timeline: • 17.12.2019 - Contacted all identified vendors, i.e. TOTOLINK, CIK Telecom, Sapido, Fibergate and Coship. • 18.12.2019 - received TOTOLINK first line support response totally not related to my message and showing me how to log into my router. I responded right away and asked to forward the message to technical/security team. • 19.12.2019 - received response from CIK Telecom stating that the routers support encryption (SIC!). I replied asking to forward the message to technical/security team. • 19.12.20219 - CIK Telecom responded that for further assistance I should contact them over the phone. I replied that I need to explain the details as a written message as this is technical. • 27.12.2019, 06.01.2020 - I resent the messages to TOTOLINK and CIK Telecom but none have replied till the date of disclosure. • 06.01.2020 - I finally contacted Realtek as the Supplier of the SDK. • 10.01.2020 - I got a response and I replied with encrypted details on the bugs. • 14-15.01.2020 - Realtek replied that the issue with dumping configuration by apmib exists but it is not directly exploitable in the defualt SDK configuration becuase it uses HTTP Basic authentication which protects all URLs. They agreed however that most of the Vendors modify the software including authentication mechanism thus making it vulnerable. • 23.01.2020 - Realtek responded that they are goining to fix the issue with dumping configuration to the config.dat file in version released on 15.02.2020. They also said that after fixing the issue the impact of storing password in plaintext is less significant thus they will not fix the CVE-2019-19823 yet but will try to fix it in the future.
Temporary workaround: Unfortunately I did not get any good information from real vendors like TOTOLINK and for now I would suggest to disable administration interface from WAN and restricting LAN router administration interface access using some kind of firewall if possible.
Credit: Blazej Adamczyk | blazej.adamczyk@gmail.com | http://sploit.tech/
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"data": "A certain router administration interface (that includes Realtek APMIB 0.11f for Boa 0.94.14rc21) allows remote attackers to retrieve the configuration, including sensitive data (usernames and passwords). This affects TOTOLINK A3002RU through 2.0.0, A702R through 2.1.3, N301RT through 2.1.6, N302R through 3.4.0, N300RT through 3.4.0, N200RE through 4.0.0, N150RT through 3.4.0, and N100RE through 3.4.0; Rutek RTK 11N AP through 2019-12-12; Sapido GR297n through 2019-12-12; CIK TELECOM MESH ROUTER through 2019-12-12; KCTVJEJU Wireless AP through 2019-12-12; Fibergate FGN-R2 through 2019-12-12; Hi-Wifi MAX-C300N through 2019-12-12; HCN MAX-C300N through 2019-12-12; T-broad GN-866ac through 2019-12-12; Coship EMTA AP through 2019-12-12; and IO-Data WN-AC1167R through 2019-12-12. Multiple products contain vulnerabilities in insufficient protection of credentials.Information may be obtained. \u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\n MULTIPLE VULNERABILITIES IN SEVERAL SERIES OF\n REALTEK SDK BASED ROUTERS (TOTOLINK AND MANY\n OTHER)\n\n\n Blazej Adamczyk (br0x)\n blazej.adamczyk@gmail.com\n https://sploit.tech/\n \u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\n\n\n 11.12.2019\n\n\n\n\n\n1 Sensitive data disclosure and incorrect access control in several series\nof Realtek SDK based routers\n\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\n CVE: CVE-2019-19822\n\n SDK vendor: Realtek\n\n Device vendor: TOTOLINK, Sapido, CIK Telecom, Fibergate Inc.,\n MAX-C300N, T-BROAD and possibly others.. \n\n Product: Realtek SDK based routers backed by Boa HTTP server (and\n possibly others) and using apmib library for memory management. \n\n This affects:\n \u2022 TOTOLINK A3002RU through 2.0.0,\n \u2022 TOTOLINK 702R through 2.1.3,\n \u2022 TOTOLINK N301RT through 2.1.6,\n \u2022 TOTOLINK N302R through 3.4.0,\n \u2022 TOTOLINK N300RT through 3.4.0,\n \u2022 TOTOLINK N200RE through 4.0.0,\n \u2022 TOTOLINK N150RT through 3.4.0, and\n \u2022 TOTOLINK N100RE through 3.4.0;\n \u2022 Rutek RTK 11N AP through 2019-12-12;\n \u2022 Sapido GR297n through 2019-12-12;\n \u2022 CIK TELECOM MESH ROUTER through 2019-12-12;\n \u2022 KCTVJEJU Wireless AP through 2019-12-12;\n \u2022 Fibergate FGN-R2 through 2019-12-12;\n \u2022 Hi-Wifi MAX-C300N through 2019-12-12;\n \u2022 HCN MAX-C300N through 2019-12-12;\n \u2022 T-broad GN-866ac through 2019-12-12;\n \u2022 Coship EMTA AP through 2019-12-12; and\n \u2022 IO-Data WN-AC1167R through 2019-12-12; and\n \u2022 possibly others. \n\n Technical details: The apmib library at some point of initialization\n dumps the whole memory contents the file /web/config.dat. This folder\n is actually used by the boa http server as index directory. \n Additionally if the router is configured for form-based authentication\n the access control verifies credentials only for some URLs but \".dat\"\n files are not restricted. This issue does not affect routers which use\n HTTP Basic authentication to secure all URLs. \n\n PoC:\n \u250c\u2500\u2500\u2500\u2500\n \u2502 $ curl http://routerip/config.dat\n \u2514\u2500\u2500\u2500\u2500\n\n\n2 Password stored in plaintext in Realtek SDK based routers\n\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\n CVE: CVE-2019-19823\n\n SDK vendor: Realtek\n\n Device vendor: TOTOLINK, Sapido, CIK Telecom, Fibergate Inc.,\n MAX-C300N, T-BROAD and possibly others.. \n\n Product: Realtek SDK based routers backed by Boa HTTP server (and\n possibly others) and using apmib library for memory management. \n\n Boa Version: \u003c= Boa/0.94.14rc21 SDK Version: \u003c 2020/02/15\n\n Description: Realtek SDK based routers (that includes Realtek APMIB\n 0.11f and Boa HTTP server 0.94.14rc21) store passwords in plaintext. \n\n This affects:\n \u2022 TOTOLINK A3002RU through 2.0.0,\n \u2022 TOTOLINK 702R through 2.1.3,\n \u2022 TOTOLINK N301RT through 2.1.6,\n \u2022 TOTOLINK N302R through 3.4.0,\n \u2022 TOTOLINK N300RT through 3.4.0,\n \u2022 TOTOLINK N200RE through 4.0.0,\n \u2022 TOTOLINK N150RT through 3.4.0, and\n \u2022 TOTOLINK N100RE through 3.4.0;\n \u2022 Rutek RTK 11N AP through 2019-12-12;\n \u2022 Sapido GR297n through 2019-12-12;\n \u2022 CIK TELECOM MESH ROUTER through 2019-12-12;\n \u2022 KCTVJEJU Wireless AP through 2019-12-12;\n \u2022 Fibergate FGN-R2 through 2019-12-12;\n \u2022 Hi-Wifi MAX-C300N through 2019-12-12;\n \u2022 HCN MAX-C300N through 2019-12-12;\n \u2022 T-broad GN-866ac through 2019-12-12;\n \u2022 Coship EMTA AP through 2019-12-12; and\n \u2022 IO-Data WN-AC1167R through 2019-12-12; and\n \u2022 possibly others. \n\n Technical details: Data stored in memory in COMPCS (apmib library)\n format contains device administration and other passwords in\n plaintext. The apmib library additionally at some point of\n initialization dumps the whole memory contents the file\n /web/config.dat which might be used to easily retrieve user passwords. \n\n\n3 Code execution in several TOTOLINK routers\n\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\n CVE: CVE-2019-19824\n\n Vendor: TOTOLINK\n\n Product: TOTOLINK Realtek SDK based routers\n\n Boa Version: \u003c= Boa/0.94.14rc21\n\n Description: On several Realted SDK based TOTOLINK routers, an\n authenticated attacker may execute arbitrary OS commands via the\n sysCmd parameter to the boafrm/formSysCmd URI, even if the GUI\n (syscmd.htm) is not available. This allows for full control over the\n device\u0027s internals. \n\n This affects:\n \u2022 A3002RU through 2.0.0,\n \u2022 A702R through 2.1.3,\n \u2022 N301RT through 2.1.6,\n \u2022 N302R through 3.4.0,\n \u2022 N300RT through 3.4.0,\n \u2022 N200RE through 4.0.0,\n \u2022 N150RT through 3.4.0,\n \u2022 N100RE through 3.4.0, and\n \u2022 possibly others. \n\n PoC:\n \u250c\u2500\u2500\u2500\u2500\n \u2502 $ curl \u0027http://routerip/boafrm/formSysCmd\u0027 --user \"admin:password\" \n \u2502 --data \u0027submit-url=%2Fsyscmd.htm\u0026sysCmdselect=5\u0026sysCmdselects=0\u0026\n \u2502 save_apply=Run+Command\u0026sysCmd=cp%20%2Fetc%2Fpasswd%20%2Fweb%2Fxxxx.dat\u0027\n \u2514\u2500\u2500\u2500\u2500\n\n\n4 Incorrectly implemented captcha protection in TOTOLINK routers\n\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\n CVE: CVE-2019-19825\n\n Vendor: TOTOLINK\n\n Product: TOTOLINK Realtek SDK based routers\n\n Boa Version: \u003c= Boa/0.94.14rc21\n\n Description: Guessable captcha vulnerability (CWE-804) in several\n series of TOTOLINK routers allows a remote attacker to automatically\n login to the router without reading and providing real captcha. \n\n The following command returns captcha in plain text:\n \u250c\u2500\u2500\u2500\u2500\n \u2502 $ curl \u0027http://routerip/boafrm/formLogin\u0027 --data \u0027{\"topicurl\":\"setting/getSanvas\"}\u0027\n \u2514\u2500\u2500\u2500\u2500\n\n Additionally by using the HTTP Basic in a HEADER the attacker can\n execute router actions without providing captcha at all. \n\n This affects:\n \u2022 A3002RU through 2.0.0,\n \u2022 A702R through 2.1.3,\n \u2022 N301RT through 2.1.6,\n \u2022 N302R through 3.4.0,\n \u2022 N300RT through 3.4.0,\n \u2022 N200RE through 4.0.0,\n \u2022 N150RT through 3.4.0,\n \u2022 N100RE through 3.4.0, and\n \u2022 possibly others. \n\n\n5 Exploiting all together on TOTOLINK routers\n\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\n CVSS v3 socre: 9.6 AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H (assuming\n Administrative Access on WAN is enabled the score is 10.0)\n\n Exploiting all the vulnerabilities together allows a remote\n unauthenticated attacker to execute any code with root permissions and\n reveal administration password. \n\n The only thing that is needed is the access to router administration\n interface (either access to local network or Administrative Access on\n WAN enabled)\n\n Description, video and possibly an exploit:\n https://sploit.tech/2019/12/16/Realtek-TOTOLINK.html\n\n Timeline:\n \u2022 17.12.2019 - Contacted all identified vendors, i.e. TOTOLINK, CIK\n Telecom, Sapido, Fibergate and Coship. \n \u2022 18.12.2019 - received TOTOLINK first line support response totally\n not related to my message and showing me how to log into my router. \n I responded right away and asked to forward the message to\n technical/security team. \n \u2022 19.12.2019 - received response from CIK Telecom stating that the\n routers support encryption (SIC!). I replied asking to forward the\n message to technical/security team. \n \u2022 19.12.20219 - CIK Telecom responded that for further assistance I\n should contact them over the phone. I replied that I need to explain\n the details as a written message as this is technical. \n \u2022 27.12.2019, 06.01.2020 - I resent the messages to TOTOLINK and CIK\n Telecom but none have replied till the date of disclosure. \n \u2022 06.01.2020 - I finally contacted Realtek as the Supplier of the SDK. \n \u2022 10.01.2020 - I got a response and I replied with encrypted details\n on the bugs. \n \u2022 14-15.01.2020 - Realtek replied that the issue with dumping\n configuration by apmib exists but it is not directly exploitable in\n the defualt SDK configuration becuase it uses HTTP Basic\n authentication which protects all URLs. They agreed however that\n most of the Vendors modify the software including authentication\n mechanism thus making it vulnerable. \n \u2022 23.01.2020 - Realtek responded that they are goining to fix the\n issue with dumping configuration to the config.dat file in version\n released on 15.02.2020. They also said that after fixing the issue\n the impact of storing password in plaintext is less significant thus\n they will not fix the CVE-2019-19823 yet but will try to fix it in\n the future. \n\n Temporary workaround: Unfortunately I did not get any good information\n from real vendors like TOTOLINK and for now I would suggest to disable\n administration interface from WAN and restricting LAN router\n administration interface access using some kind of firewall if\n possible. \n\n Credit: Blazej Adamczyk | blazej.adamczyk@gmail.com | http://sploit.tech/\n",
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