CVE-2012-3405

medium

Published 2014-02-10 · Modified 2026-04-29

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

5.0

Description

The vfprintf function in stdio-common/vfprintf.c in libc in GNU C Library (aka glibc) 2.14 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 (segmentation fault and crash) via a format string with a large number of format specifiers that triggers "desynchronization within the buffer size handling," a different vulnerability than CVE-2012-3404.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

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OS impact

OS	Version	Status	Fixed in
debian	bookworm	fixed	`2.13-35`
debian	bullseye	fixed	`2.13-35`
debian	forky	fixed	`2.13-35`
debian	sid	fixed	`2.13-35`
debian	trixie	fixed	`2.13-35`
rhel	6.0	affected
ubuntu	8.04	affected
ubuntu	10.04	affected
ubuntu	11.04	affected
ubuntu	11.10	affected
ubuntu	12.04	affected

Application impact

Vendor	Product	Versions	Fixed
gnu	glibc	`2.14`
redhat	enterprise_virtualization	`3.0`

References

CWEs

CWE-189

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.