49374 : libpng pngrutil.c png_handle_tEXt Function Crafted PNG File Handling Memory Leak DoS
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
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Timeline

Disclosure Date
2008-10-28

Description

libpng contains a flaw in the 'png_handle_tEXt()' function that may allow a remote denial of service. The issue is due to a memory leak error within the 'png_handle_tEXt()' function in pngrutil.c. With a specially crafted PNG file, a context-dependent attacker can cause the program to exhaust all available memory.

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 1.2.33rc02, 1.4.0beta36 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

libpng

1.2.31

References

Security Tracker: 1021104
CVE ID: 2008-6218 (see also: NVD)
Bugtraq ID: 31920
Secunia Advisory ID: 32418 32707 34265 34320 34388 45635 45646 45660
ISS X-Force ID: 46115
Vendor Specific News/Changelog Entry: http://lists.debian.org/debian-security-announce/2009/msg00060.html
http://sourceforge.net/project/shownotes.php?release_id=635837
https://www.redhat.com/archives/fedora-package-announce/2008-November/msg00320.html
https://www.redhat.com/archives/fedora-package-announce/2008-November/msg00327.html
Other Advisory URL: http://sourceforge.net/project/shownotes.php?release_id=635463&group_id=5624
Vendor Specific Advisory URL: http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0046
http://www.gentoo.org/security/en/glsa/glsa-200903-28.xml
https://hermes.opensuse.org/messages/11255439
https://hermes.opensuse.org/messages/11259948
https://hermes.opensuse.org/messages/11279547
Vendor URL: http://www.libpng.org/pub/png/libpng.html

Credit

Not Available

CVSSv2 Score

CVSSv2 Base Score = 7.1
Source: nvd.nist.gov | Generated: 2009-02-23 | Disagree?

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