CVE-2012-6656

Name: CVE-2012-6656
Creator: NVD / NIST
Published: 2014-12-05T16:59:00.067+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.44%

Last modified Jun 16, 2026

CVE-2012-6656 is a vulnerability of currently unknown severity. iconvdata/ibm930.c in GNU C Library (aka glibc) before 2.16 allows context-dependent attackers to cause a denial of service (out-of-bounds read) via a multibyte character value of "0xffff" to the iconv function when converting IBM930 encoded data to UTF-8.. EPSS estimates a 3.44% chance of exploitation in the next 30 days.

Description

iconvdata/ibm930.c in GNU C Library (aka glibc) before 2.16 allows context-dependent attackers to cause a denial of service (out-of-bounds read) via a multibyte character value of "0xffff" to the iconv function when converting IBM930 encoded data to UTF-8.

Metrics

EPSS Probability

3.44%

87.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Debian	Debian Linux	7.0
Canonical	Ubuntu Linux	10.04
Canonical	Ubuntu Linux	12.04
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	14.10
Gnu	Glibc	<= 2.16

References

http://www.debian.org/security/2015/dsa-3142Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2014:175Broken Link
http://www.openwall.com/lists/oss-security/2014/08/29/3Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2014/09/02/1Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/69472Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2432-1Third Party Advisory
https://security.gentoo.org/glsa/201503-04
https://sourceware.org/bugzilla/show_bug.cgi?id=14134Exploit, Issue Tracking
https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=6e230d11837f3ae7b375ea69d7905f0d18eb79e5
http://www.debian.org/security/2015/dsa-3142Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2014:175Broken Link
http://www.openwall.com/lists/oss-security/2014/08/29/3Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2014/09/02/1Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/69472Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2432-1Third Party Advisory
https://security.gentoo.org/glsa/201503-04
https://sourceware.org/bugzilla/show_bug.cgi?id=14134Exploit, Issue Tracking
https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=6e230d11837f3ae7b375ea69d7905f0d18eb79e5

Timeline

Published: Dec 5, 2014
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2012-6656?

How severe is CVE-2012-6656?

Severity scoring for CVE-2012-6656 is pending analysis. The EPSS model estimates a 3.44% probability of exploitation in the next 30 days.

How do I fix CVE-2012-6656?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2012-6656?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST