SB2019042231 - Input validation error in Glibc

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2019042231

SB2019042231 - Input validation error in Glibc

Published: April 22, 2019 Updated: June 3, 2025

Security Bulletin ID SB2019042231
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Input validation error (CVE-ID: CVE-2012-3404)

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

The vfprintf function in stdio-common/vfprintf.c in libc in GNU C Library (aka glibc) 2.12 and other versions does not properly calculate a buffer length, which allows context-dependent attackers to bypass the FORTIFY_SOURCE format-string protection mechanism and cause a denial of service (stack corruption and crash) via a format string that uses positional parameters and many format specifiers.


Remediation

Install update from vendor's website.

References