VULNERABILITY INTELLIGENCE

CVE-2023-6779

CVSS score8.2 HIGH
EPSS probability3.15%
CISA KEVNot currently listed
Published2024-01-31
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Description

An off-by-one 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 these functions are called with a message bigger than INT_MAX bytes, leading to an incorrect calculation of the buffer size to store the message, resulting in an application crash. This issue affects glibc 2.37 and newer.

Weakness classification

  • CWE-122: Heap-based Buffer Overflow
  • CWE-787: Out-of-bounds Write

Primary references