CVE-2012-3406
eglibc - security update
EPSS 0.87%
Description
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.
How to fix CVE-2012-3406
To remediate CVE-2012-3406, upgrade the affected package to a fixed version below.
- —upgrade to 2.13-38+deb7u8 or later
- —upgrade to 2.19-14 or later
Is CVE-2012-3406 being exploited?
Low — EPSS is 0.9%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.13-38+deb7u8
- from 0, < 2.19-14