CVE-2012-6656: Input Validation
First published: Fri Dec 05 2014(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Debian | =7.0 | |
| Ubuntu | =10.04 | |
| Ubuntu | =12.04 | |
| Ubuntu | =14.04 | |
| Ubuntu | =14.10 | |
| GNU C Library (glibc) | <=2.16 |
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Reference Links
- http://www.debian.org/security/2015/dsa-3142
- http://www.mandriva.com/security/advisories?name=MDVSA-2014:175
- http://www.openwall.com/lists/oss-security/2014/08/29/3
- http://www.openwall.com/lists/oss-security/2014/09/02/1
- http://www.securityfocus.com/bid/69472
- http://www.ubuntu.com/usn/USN-2432-1
- https://security.gentoo.org/glsa/201503-04
- https://sourceware.org/bugzilla/show_bug.cgi?id=14134
- https://sourceware.org/git/?p=glibc.git;a=commit;h=6e230d11837f3ae7b375ea69d7905f0d18eb79e5
- https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=6e230d11837f3ae7b375ea69d7905f0d18eb79e5
Frequently Asked Questions
What is the severity of CVE-2012-6656?
CVE-2012-6656 has a medium severity rating due to its potential to cause denial of service through out-of-bounds read.
How do I fix CVE-2012-6656?
To fix CVE-2012-6656, you should upgrade glibc to version 2.17 or later.
Which software is affected by CVE-2012-6656?
CVE-2012-6656 affects versions of GNU C Library (glibc) prior to 2.16, and it is also affective on specific Debian and Ubuntu Linux distributions.
Is CVE-2012-6656 exploited in the wild?
There are no widely reported cases of CVE-2012-6656 being actively exploited in the wild.
What are the potential impacts of CVE-2012-6656?
The potential impacts of CVE-2012-6656 include system instability and denial of service due to errors in character conversion.
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- vendor/debian
- canonical/debian
- version/debian/7.0
- vendor/canonical
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- version/ubuntu/10.04
- version/ubuntu/12.04
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- version/gnu c library (glibc)/2.16