73983 : libpng pngerror.c png_err() Function NULL Argument PNG File Handling DoS
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Timeline

Disclosure Date
2011-05-06

Description

libpng contains a flaw in the handling of PNG files that may allow a remote denial of service. The issue is due to the usage of a NULL argument in the 'png_default_error()' function in pngerror.c. With a specially crafted PNG file, a context-dependent attacker can cause the program to crash.

Classification

Location: Context Dependent
Attack Type: Denial of Service
Impact: Loss of Availability
Solution: Upgrade
Exploit: Exploit Unknown
Disclosure: Vendor Verified

Solution

Upgrade to version 1.0.55, 1.2.45, 1.4.8, 1.5.3beta05, 1.5.4 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

libpng

1.2.20

References

CVE ID: 2011-2691 (see also: NVD)
Secunia Advisory ID: 45046 45362 45405 45492 45635 45646 45660 46417 49402 49660
Bugtraq ID: 48660
ISS X-Force ID: 68537
Vendor Specific News/Changelog Entry: http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03315912
http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng/libpng;a=commit;h=9dad5e37aef295b4ef8dea39392b652deebc9261
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/062934.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063118.html
http://www.gentoo.org/security/en/glsa/glsa-201206-15.xml
http://www.libpng.org/pub/png/libpng.html
https://bugzilla.redhat.com/show_bug.cgi?id=720608
Mail List Post: http://lists.apple.com/archives/security-announce/2011/Oct//msg00003.html
Packet Storm: http://packetstormsecurity.org/files/113582/HP-Security-Bulletin-HPSBMU02776-SSRT100852.html
Vendor Specific Advisory URL: http://support.apple.com/kb/HT5002
http://www.debian.org/security/2011/dsa-2287
https://hermes.opensuse.org/messages/11255439
https://hermes.opensuse.org/messages/11259948
https://hermes.opensuse.org/messages/11279547
Vendor URL: http://www.libpng.org/
Other Advisory URL: http://www.mandriva.com/security/advisories?name=MDVSA-2011:151
http://www.openwall.com/lists/oss-security/2011/07/13/2

Credit

Not Available

CVSSv2 Score

CVSSv2 Base Score = 5.0
Source: nvd.nist.gov | Generated: 2011-07-18 | Disagree?

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