62670 : libpng pngrutil.c png_decompress_chunk Function Ancillary Chunks PNG File Decompression 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
2010-02-27

Description

libpng contains a flaw in the decompression of PNG files that may allow a remote denial of service. The issue is triggered when the 'png_decompress_chunk()' function in pngrutil.c fails to properly decompress certain highly compressed ancillary-chunk data. With a specially crafted PNG file, a context-dependent attacker can cause the system to exhaust the CPU and memory.

Classification

Location: Local / Remote, Context Dependent
Attack Type: Denial of Service
Impact: Loss of Availability
Solution: Upgrade
Disclosure: Vendor Verified, Uncoordinated Disclosure, Discovered in the Wild

Solution

Upgrade to version 1.0.53, 1.2.43, 1.4.1 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

libpng		1.4 beta19
		1.4 beta01
		1.4
		1.2.42
		1.2.37
		1.2.36
		1.2.35
		1.2.34
		1.2.27
		1.2.27
		1.2.26
		1.2.22
		1.2.21
		1.2.20
		1.2.19
		1.2.18
		1.2.17
		1.2.16
		1.2.13
		1.2.8
		1.0.52
		1.0.43
		1.0.42
		1.0.33
		1.0.32
		1.0.25
		1.0.24
		1.0.18
		1.0.17
		1.0.16
		1.0.15
		1.0.14
		1.0.13
		1.0.12
		1.0.11
		1.0.10
		1.0.8
		1.0.7
		1.0.6
		1.0.5

References

CVE ID: 2010-0205 (see also: NVD)
Bugtraq ID: 38478
Secunia Advisory ID: 38774 38940 39000 39131 39251 39771 39967 40167 40618 41574 41605 41606 41646 43845 46801
SCIP VulDB ID: 4205
CERT VU: 576029
Other Advisory URL: http://blogs.sun.com/security/entry/multiple_vulnerabilities_in_libpng
Vendor Specific Advisory URL: http://libpng.sourceforge.net/ADVISORY-1.4.1.html
http://www.gentoo.org/security/en/glsa/glsa-201010-01.xml
http://www.ubuntu.com/usn/USN-913-1
http://www.us.debian.org/security/2010/dsa-2032
https://support.avaya.com/css/P8/documents/100148396
Vendor Specific News/Changelog Entry: http://libpng.sourceforge.net/decompression_bombs.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-March/037355.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-March/037364.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-March/038120.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-March/038123.html
http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2010-06/msg00001.html
http://lists.vmware.com/pipermail/security-announce/2010/000105.html
RedHat RHSA: http://rhn.redhat.com/errata/RHSA-2010-0534.html
Vendor URL: http://www.libpng.org/pub/png/libpng.html

Credit

Not Available

CVSSv2 Score

CVSSv2 Base Score = 7.8
Source: nvd.nist.gov | Generated: 2010-03-04 | Disagree?

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