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
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
GraphicsMagick Group
GraphicsMagick
1.3.11

References

Credit

CVSSv2 Score

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

Access_vector_2 Access_complexity_2 Authentication_2 Confidentiality_impact_0 Integrity_impact_0 Availability_impact_2

Comments

No Comments.

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