Vulnerability Description
The png_format_buffer 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 allows remote attackers to cause a denial of service (application crash) via a crafted PNG image that triggers an out-of-bounds read during the copying of error-message data. NOTE: this vulnerability exists because of a CVE-2004-0421 regression. NOTE: this is called an off-by-one error by some sources.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Libpng | Libpng | >= 1.0.0, < 1.0.55 |
| Fedoraproject | Fedora | 14 |
| Debian | Debian Linux | 5.0 |
| Canonical | Ubuntu Linux | 8.04 |
Related Weaknesses (CWE)
References
- http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng/libpng%3Ba=commit%3Bh=
- http://lists.fedoraproject.org/pipermail/package-announce/2011-July/062720.htmlMailing ListThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063118.htmlMailing ListThird Party Advisory
- http://secunia.com/advisories/45046Broken Link
- http://secunia.com/advisories/45289Broken Link
- http://secunia.com/advisories/45405Broken Link
- http://secunia.com/advisories/45415Broken Link
- http://secunia.com/advisories/45460Broken Link
- http://secunia.com/advisories/45486Broken 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://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackwareMailing ListPatchThird Party Advisory
- http://sourceforge.net/mailarchive/forum.php?thread_name=BANLkTikrnU6FJNQYFvwmt7ExploitIssue TrackingThird Party Advisory
- http://www.debian.org/security/2011/dsa-2287Third Party Advisory
FAQ
What is CVE-2011-2501?
CVE-2011-2501 is a vulnerability with a CVSS score of 6.5 (MEDIUM). The png_format_buffer 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 allows remote attackers to cause a denial of service (applic...
How severe is CVE-2011-2501?
CVE-2011-2501 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-2011-2501?
Check the references section above for vendor advisories and patch information. Affected products include: Libpng Libpng, Fedoraproject Fedora, Debian Debian Linux, Canonical Ubuntu Linux.