CVE-2011-2501

moderate-risk
Published 2011-07-17

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.

Do I need to act?

~
2.2% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10 Medium
NETWORK / LOW complexity

Affected Products (8)

Affected Vendors

Libpng Fedoraproject Debian Canonical

References (46)

http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng/libpng%3Ba=commit%3Bh=...
Mailing List http://lists.fedoraproject.org/pipermail/package-announce/2011-July/062720.html
Mailing List http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063118.html
Broken Link http://secunia.com/advisories/45046
Broken Link http://secunia.com/advisories/45289
Broken Link http://secunia.com/advisories/45405
Broken Link http://secunia.com/advisories/45415
Broken Link http://secunia.com/advisories/45460
Broken Link http://secunia.com/advisories/45486
Broken Link http://secunia.com/advisories/45492
Broken Link http://secunia.com/advisories/49660
Third Party Advisory http://security.gentoo.org/glsa/glsa-201206-15.xml
Mailing List http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware...
Exploit http://sourceforge.net/mailarchive/forum.php?thread_name=BANLkTikrnU6FJNQYFvwmt7...
Third Party Advisory http://www.debian.org/security/2011/dsa-2287
Broken Link http://www.mandriva.com/security/advisories?name=MDVSA-2011:151
Mailing List http://www.openwall.com/lists/oss-security/2011/06/27/13
Mailing List http://www.openwall.com/lists/oss-security/2011/06/28/16
Broken Link http://www.redhat.com/support/errata/RHSA-2011-1105.html
Third Party Advisory http://www.securityfocus.com/bid/48474
and 26 more references
43
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 5/34 · Minimal
Exposure 14/34 · Moderate