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.
Published: 2014-02-10
Score: 6.8 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-165-1 eglibc security update
Debian DSA Debian DSA DSA-3169-1 eglibc security update
EUVD EUVD EUVD-2012-3377 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.
Ubuntu USN Ubuntu USN USN-1589-1 GNU C Library vulnerabilities
History

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Subscriptions

Canonical Ubuntu Linux
Gnu Glibc
Redhat Enterprise Linux Enterprise Virtualization
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-06T20:05:12.465Z

Reserved: 2012-06-14T00:00:00.000Z

Link: CVE-2012-3406

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2014-02-10T18:15:10.120

Modified: 2026-04-29T01:13:23.040

Link: CVE-2012-3406

cve-icon Redhat

Severity : Moderate

Publid Date: 2012-07-11T00:00:00Z

Links: CVE-2012-3406 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses