Improper Handling of Extra Parameters Affecting glibc package, versions [2.5,2.13)


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.87% (75th percentile)

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  • Snyk IDSNYK-UNMANAGED-GLIBC-2319032
  • published14 Dec 2021
  • disclosed10 Feb 2014
  • creditUnknown

Introduced: 10 Feb 2014

CVE-2012-3406  (opens in a new tab)
CWE-235  (opens in a new tab)

How to fix?

Upgrade glibc to version 2.13 or higher.

Overview

Affected versions of this package are vulnerable to Improper Handling of Extra Parameters. The vfprintf function in stdio-common/vfprintf.c in GNU C Library (aka glibc) 2.5, 2.12, and probably other versions does not "properly restrict the use of" the alloca function when allocating the SPECS array, which allows context-dependent attackers to bypass the FORTIFY_SOURCE format-string protection mechanism and cause a denial of service (crash) or possibly execute arbitrary code via a crafted format string using positional parameters and a large number of format specifiers, a different vulnerability than CVE-2012-3404 and CVE-2012-3405.

References

CVSS Base Scores

version 3.1