SB2024013136 - Fedora 39 update for glibc 

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Main Vulnerability Database SB2024013136

SB2024013136 - Fedora 39 update for glibc

Published: January 31, 2024 Updated: May 20, 2025

Security Bulletin ID SB2024013136
Severity
Low
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Heap-based buffer overflow (CVE-ID: CVE-2023-6246)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error within the __vsyslog_internal() function, which is called by both syslog() and vsyslog() while printing the SYSLOG_HEADER containing a long program name. A local user can pass a specially crafted input as arguments to the affected application, trigger a heap-based buffer overflow and execute arbitrary code on the system.



2) Off-by-one (CVE-ID: CVE-2023-6779)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to an off-by-one error within the __vsyslog_internal() function. A local user can trigger memory corruption and execute arbitrary code with elevated privileges.


3) Integer overflow (CVE-ID: CVE-2023-6780)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to integer overflow within the __vsyslog_internal() function. A local user can pass specially crafted input to the affected application, trigger an integer overflow and execute arbitrary code with elevated privileges.


Remediation

Install update from vendor's website.

References