Out-of-bounds Write Affecting glibc package, versions <2.39-0ubuntu1


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

Exploit Maturity
Proof of concept
EPSS
1.51% (87th percentile)

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  • Snyk IDSNYK-UBUNTU2404-GLIBC-6696175
  • published29 Apr 2024
  • disclosed31 Jan 2024

Introduced: 31 Jan 2024

CVE-2023-6246  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Ubuntu:24.04 glibc to version 2.39-0ubuntu1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Ubuntu. See How to fix? for Ubuntu:24.04 relevant fixed versions and status.

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.

CVSS Scores

version 3.1