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CVE-2023-6246

8.4 · HIGH

A heap-based buffer overflow was found in the __vsyslog_internal function of the glibc library.

Published Jan 31, 2024CWE-122EPSS 4.79%

Overview

CVE-2023-6246 is a high-severity vulnerability. It was published on January 31, 2024 and has a CVSS 3.1 base score of 8.4 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

A heap-based buffer overflow was found in the __vsyslog_internal function of the glibc library. This function is called by the syslog and vsyslog functions. This issue occurs when the openlog function was not called, or called with the ident argument set to NULL, and the program name (the basename of argv[0]) is bigger than 1024 bytes, resulting in an application crash or local privilege escalation. This issue affects glibc 2.36 and newer.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refpacketstormsecurity.com/files/176931/glibc-qsort-Out-Of-Bounds-Read-Write.htmlRefpacketstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.htmlRefseclists.org/fulldisclosure/2024/Feb/3Refseclists.org/fulldisclosure/2024/Feb/5Refaccess.redhat.com/security/cve/CVE-2023-6246Refbugzilla.redhat.com/show_bug.cgi?id=2249053Reflists.fedoraproject.org/archives/list/[email protected]/message/D2FIH77VHY3KCRROCXOT6L27WMZXSJ2G/Reflists.fedoraproject.org/archives/list/[email protected]/message/MWQ6BZJ6CV5UAW4VZSKJ6TO4KIW2KWAQ/Refsecurity.gentoo.org/glsa/202402-01Refsecurity.netapp.com/advisory/ntap-20240216-0007/

How CyberStrike helps

Frequently asked questions

What is CVE-2023-6246?

CVE-2023-6246 is a high-severity vulnerability. It was published on January 31, 2024 and has a CVSS 3.1 base score of 8.4 (HIGH).

How severe is CVE-2023-6246?

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-6246?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-6246?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-6246 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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