53316 : libpng pCAL Chunk Handling Uninitialized Pointer Free Arbitrary Code Execution
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Timeline

Disclosure Date
2009-02-20

Description

libpng contains a flaw in the handling of pCAL chunks. The issue is due to the application improperly initializing certain poitner arrays prior to releasing array elements. With a specially crafted PNG file, a context-dependent attacker can potentially execute arbitrary code.

Classification

Location: Local / Remote, Context Dependent
Attack Type: Input Manipulation
Impact: Loss of Integrity
Solution: Upgrade
Exploit: Exploit Unknown
Disclosure: Vendor Verified

Solution

Upgrade to version 1.2.35 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

libpng	libpng	1.0.42
		1.2.34

References

Tools & Filters

	35977 38743 38744 40501
	4950 4964 4965 5023 5122

Credit

Not Available

CVSSv2 Score

CVSSv2 Base Score = 6.8
Source: nvd.nist.gov | Generated: 2009-02-23 | Disagree?

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