CVE-2011-2691

moderate-risk
Published 2011-07-17

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.

Do I need to act?

~
7.7% 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 (4)

Affected Vendors

Libpng Debian Fedoraproject

References (34)

http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng/libpng%3Ba=commit%3Bh=...
Mailing List http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
Mailing List http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063118.html
Mailing List http://marc.info/?l=bugtraq&m=133951357207000&w=2
Broken Link http://secunia.com/advisories/45046
Broken Link http://secunia.com/advisories/45405
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
Third Party Advisory http://support.apple.com/kb/HT5002
Third Party Advisory http://www.debian.org/security/2011/dsa-2287
Product http://www.libpng.org/pub/png/libpng.html
Broken Link http://www.mandriva.com/security/advisories?name=MDVSA-2011:151
Mailing List http://www.openwall.com/lists/oss-security/2011/07/13/2
Third Party Advisory http://www.securityfocus.com/bid/48660
Exploit https://bugzilla.redhat.com/show_bug.cgi?id=720608
Third Party Advisory https://exchange.xforce.ibmcloud.com/vulnerabilities/68537
http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng/libpng%3Ba=commit%3Bh=...
Mailing List http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
Mailing List http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063118.html
and 14 more references
44
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 10/34 · Low
Exposure 10/34 · Low