Vulnerability Description
The png_err function in pngerror.c in libpng 1.0.x before 1.0.55, 1.2.x before 1.2.45, 1.4.x before 1.4.8, and 1.5.x before 1.5.4 makes a function call using a NULL pointer argument instead of an empty-string argument, which allows remote attackers to cause a denial of service (application crash) via a crafted PNG image.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Libpng | Libpng | >= 1.0.0, < 1.0.55 |
| Fedoraproject | Fedora | 14 |
| Debian | Debian Linux | 5.0 |
Related Weaknesses (CWE)
References
- http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng/libpng%3Ba=commit%3Bh=
- http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.htmlMailing ListThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063118.htmlMailing ListThird Party Advisory
- http://marc.info/?l=bugtraq&m=133951357207000&w=2Mailing ListThird Party Advisory
- http://secunia.com/advisories/45046Broken Link
- http://secunia.com/advisories/45405Broken Link
- http://secunia.com/advisories/45492Broken Link
- http://secunia.com/advisories/49660Broken Link
- http://security.gentoo.org/glsa/glsa-201206-15.xmlThird Party Advisory
- http://support.apple.com/kb/HT5002Third Party Advisory
- http://www.debian.org/security/2011/dsa-2287Third Party Advisory
- http://www.libpng.org/pub/png/libpng.htmlProductVendor Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:151Broken Link
- http://www.openwall.com/lists/oss-security/2011/07/13/2Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/48660Third Party AdvisoryVDB Entry
FAQ
What is CVE-2011-2691?
CVE-2011-2691 is a vulnerability with a CVSS score of 6.5 (MEDIUM). The png_err function in pngerror.c in libpng 1.0.x before 1.0.55, 1.2.x before 1.2.45, 1.4.x before 1.4.8, and 1.5.x before 1.5.4 makes a function call using a NULL pointer argument instead of an empt...
How severe is CVE-2011-2691?
CVE-2011-2691 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2011-2691?
Check the references section above for vendor advisories and patch information. Affected products include: Libpng Libpng, Fedoraproject Fedora, Debian Debian Linux.