CWE-476
NULL Pointer Dereference
The product dereferences a pointer that it expects to be valid but is NULL.
CVE-2018-10918 (GCVE-0-2018-10918)
Vulnerability from cvelistv5 – Published: 2018-08-22 17:00 – Updated: 2024-08-05 07:54
VLAI
Summary
A null pointer dereference flaw was found in the way samba checked database outputs from the LDB database layer. An authenticated attacker could use this flaw to crash a samba server in an Active Directory Domain Controller configuration. Samba versions before 4.7.9 and 4.8.4 are vulnerable.
Severity
5.2 (Medium)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://www.samba.org/samba/security/CVE-2018-109… | x_refsource_CONFIRM |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://usn.ubuntu.com/3738-1/ | vendor-advisoryx_refsource_UBUNTU |
| https://security.netapp.com/advisory/ntap-2018081… | x_refsource_CONFIRM |
| http://www.securityfocus.com/bid/105083 | vdb-entryx_refsource_BID |
| https://security.gentoo.org/glsa/202003-52 | vendor-advisoryx_refsource_GENTOO |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Samba Team | samba |
Affected:
4.7.9
Affected: 4.8.4 |
Date Public
2018-08-16 00:00
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CVE-2018-1130 (GCVE-0-2018-1130)
Vulnerability from cvelistv5 – Published: 2018-05-10 13:00 – Updated: 2024-08-05 03:51
VLAI
Summary
Linux kernel before version 4.16-rc7 is vulnerable to a null pointer dereference in dccp_write_xmit() function in net/dccp/output.c in that allows a local user to cause a denial of service by a number of certain crafted system calls.
Severity
5.5 (Medium)
CWE
Assigner
References
18 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| unspecified | kernel |
Affected:
kernel 4.16-rc7
|
Date Public
2018-03-07 00:00
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CVE-2018-1172 (GCVE-0-2018-1172)
Vulnerability from cvelistv5 – Published: 2018-05-16 21:00 – Updated: 2024-08-05 03:51
VLAI
Summary
This vulnerability allows remote attackers to deny service on vulnerable installations of The Squid Software Foundation Squid 3.5.27-20180318. Authentication is not required to exploit this vulnerability. The specific flaw exists within ClientRequestContext::sslBumpAccessCheck(). A crafted request can trigger the dereference of a null pointer. An attacker can leverage this vulnerability to create a denial-of-service condition to users of the system. Was ZDI-CAN-6088.
Severity
No CVSS data available.
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://zerodayinitiative.com/advisories/ZDI-18-309 | x_refsource_MISC |
| http://www.squid-cache.org/Advisories/SQUID-2018_3.txt | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Squid Software Foundation | The Squid Software Foundation Squid |
Affected:
3.5.27-20180318
|
Date Public
2018-04-18 00:00
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CVE-2018-12469 (GCVE-0-2018-12469)
Vulnerability from cvelistv5 – Published: 2018-10-12 13:00 – Updated: 2024-09-16 19:46
VLAI
Summary
Incorrect handling of an invalid value for an HTTP request parameter by Directory Server (aka Enterprise Server Administration web UI) in Micro Focus Enterprise Developer and Enterprise Server 2.3 Update 2 and earlier, 3.0 before Patch Update 12, and 4.0 before Patch Update 2 causes a null pointer dereference (CWE-476) and subsequent denial of service due to process termination.
Severity
No CVSS data available.
CWE
- CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://community.microfocus.com/microfocus/mainf… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Micro Focus | Micro Focus Enterprise Developer, Micro Focus Enterprise Server |
Affected:
All versions before 3.0 Patch Update 12, 4.0 Patch Update 2, 5.0
|
Date Public
2018-10-04 00:00
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CVE-2018-14646 (GCVE-0-2018-14646)
Vulnerability from cvelistv5 – Published: 2018-11-26 19:00 – Updated: 2024-08-05 09:38
VLAI
Summary
The Linux kernel before 4.15-rc8 was found to be vulnerable to a NULL pointer dereference bug in the __netlink_ns_capable() function in the net/netlink/af_netlink.c file. A local attacker could exploit this when a net namespace with a netnsid is assigned to cause a kernel panic and a denial of service.
Severity
5.5 (Medium)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2018:3843 | vendor-advisoryx_refsource_REDHAT |
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| https://marc.info/?l=linux-netdev&m=151500466401174&w=2 | x_refsource_CONFIRM |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
Date Public
2018-11-26 00:00
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CVE-2018-16851 (GCVE-0-2018-16851)
Vulnerability from cvelistv5 – Published: 2018-11-28 14:00 – Updated: 2024-08-05 10:32
VLAI
Summary
Samba from version 4.0.0 and before versions 4.7.12, 4.8.7, 4.9.3 is vulnerable to a denial of service. During the processing of an LDAP search before Samba's AD DC returns the LDAP entries to the client, the entries are cached in a single memory object with a maximum size of 256MB. When this size is reached, the Samba process providing the LDAP service will follow the NULL pointer, terminating the process. There is no further vulnerability associated with this issue, merely a denial of service.
Severity
6.5 (Medium)
CWE
Assigner
References
9 references
| URL | Tags |
|---|---|
| http://www.securityfocus.com/bid/106027 | vdb-entryx_refsource_BID |
| https://usn.ubuntu.com/3827-2/ | vendor-advisoryx_refsource_UBUNTU |
| https://usn.ubuntu.com/3827-1/ | vendor-advisoryx_refsource_UBUNTU |
| https://security.netapp.com/advisory/ntap-2018112… | x_refsource_CONFIRM |
| https://lists.debian.org/debian-lts-announce/2018… | mailing-listx_refsource_MLIST |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://www.debian.org/security/2018/dsa-4345 | vendor-advisoryx_refsource_DEBIAN |
| https://www.samba.org/samba/security/CVE-2018-168… | x_refsource_CONFIRM |
| https://security.gentoo.org/glsa/202003-52 | vendor-advisoryx_refsource_GENTOO |
Impacted products
Date Public
2018-11-27 00:00
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CVE-2018-16852 (GCVE-0-2018-16852)
Vulnerability from cvelistv5 – Published: 2018-11-28 14:00 – Updated: 2024-08-05 10:32
VLAI
Summary
Samba from version 4.9.0 and before version 4.9.3 is vulnerable to a NULL pointer de-reference. During the processing of an DNS zone in the DNS management DCE/RPC server, the internal DNS server or the Samba DLZ plugin for BIND9, if the DSPROPERTY_ZONE_MASTER_SERVERS property or DSPROPERTY_ZONE_SCAVENGING_SERVERS property is set, the server will follow a NULL pointer and terminate. There is no further vulnerability associated with this issue, merely a denial of service.
Severity
6.5 (Medium)
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://www.samba.org/samba/security/CVE-2018-168… | x_refsource_CONFIRM |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://security.netapp.com/advisory/ntap-2018112… | x_refsource_CONFIRM |
| http://www.securityfocus.com/bid/106024 | vdb-entryx_refsource_BID |
| https://security.gentoo.org/glsa/202003-52 | vendor-advisoryx_refsource_GENTOO |
Date Public
2018-11-27 00:00
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CVE-2018-16871 (GCVE-0-2018-16871)
Vulnerability from cvelistv5 – Published: 2019-07-30 16:19 – Updated: 2024-08-05 10:32
VLAI
Summary
A flaw was found in the Linux kernel's NFS implementation, all versions 3.x and all versions 4.x up to 4.20. An attacker, who is able to mount an exported NFS filesystem, is able to trigger a null pointer dereference by using an invalid NFS sequence. This can panic the machine and deny access to the NFS server. Any outstanding disk writes to the NFS server will be lost.
Severity
7.5 (High)
CWE
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://access.redhat.com/errata/RHSA-2019:2696 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2019:2730 | vendor-advisoryx_refsource_REDHAT |
| https://support.f5.com/csp/article/K18657134 | x_refsource_CONFIRM |
| https://support.f5.com/csp/article/K18657134?utm_… | x_refsource_CONFIRM |
| https://access.redhat.com/errata/RHSA-2020:0740 | vendor-advisoryx_refsource_REDHAT |
| https://security.netapp.com/advisory/ntap-2021100… | x_refsource_CONFIRM |
Impacted products
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CVE-2018-5449 (GCVE-0-2018-5449)
Vulnerability from cvelistv5 – Published: 2018-03-05 17:00 – Updated: 2024-08-05 05:33
VLAI
Summary
A NULL Pointer Dereference issue was discovered in Moxa OnCell G3100-HSPA Series version 1.4 Build 16062919 and prior. The application does not check for a NULL value, allowing for an attacker to perform a denial of service attack.
Severity
No CVSS data available.
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://ics-cert.us-cert.gov/advisories/ICSA-18-060-02 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Moxa OnCell G3100-HSPA Series |
Affected:
Moxa OnCell G3100-HSPA Series
|
Date Public
2018-03-05 00:00
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CVE-2018-6343 (GCVE-0-2018-6343)
Vulnerability from cvelistv5 – Published: 2018-12-31 22:00 – Updated: 2025-05-06 16:05
VLAI
Summary
Proxygen fails to validate that a secondary auth manager is set before dereferencing it. That can cause a denial of service issue when parsing a Certificate/CertificateRequest HTTP2 Frame over a fizz (TLS 1.3) transport. This issue affects Proxygen releases starting from v2018.10.29.00 until the fix in v2018.11.19.00.
Severity
7.5 (High)
CWE
- CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/facebook/proxygen/commit/0600e… | x_refsource_MISC |
Impacted products
Date Public
2018-12-31 00:00
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Mitigation ID: MIT-56
Phase: Implementation
Description:
- For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished [REF-1484].
Mitigation
Phase: Requirements
Description:
- Select a programming language that is not susceptible to these issues.
Mitigation
Phase: Implementation
Description:
- Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
Mitigation
Phase: Architecture and Design
Description:
- Identify all variables and data stores that receive information from external sources, and apply input validation to make sure that they are only initialized to expected values.
Mitigation
Phase: Implementation
Description:
- Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.
No CAPEC attack patterns related to this CWE.