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
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
libpng
1.2.31

References

Credit

CVSSv2 Score

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

Access_vector_2 Access_complexity_1 Authentication_2 Confidentiality_impact_0 Integrity_impact_0 Availability_impact_2

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