libpng zero length chunks code execution
| libpng-zero-length-code-execution (41800) |  High Risk |
Description:
libpng could allow a remote attacker to execute arbitrary code on the system, caused by the improper handling of unknown PNG chunks. By creating PNG chunks with a zero length, a remote attacker could cause the use of uninitialized memory to obtain sensitive information, cause a denial of service, or possibly execute arbitrary code on the system, once the chunks are processed by libpng.
Platforms Affected:
- Gentoo, Linux
- libpng, libpng 1.0.6 - 1.0.32
- libpng, libpng 1.2.0 - 1.2.26
- MandrakeSoft, Mandrake Linux 2007.1
- MandrakeSoft, Mandrake Linux 2007.1 X86_64
- MandrakeSoft, Mandrake Linux 2008.0 X86_64
- MandrakeSoft, Mandrake Linux 2008.0
- MandrakeSoft, Mandrake Linux 2008.1
- MandrakeSoft, Mandrake Linux 2008.1 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 3.0
- MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 4.0
- MandrakeSoft, Mandrake Linux Corporate Server 4.0 X86_64
- MandrakeSoft, Mandrake Multi Network Firewall 2.0
Remedy:
Upgrade to the latest version of libpng (1.2.27beta01 or later), available from the libpng Web site. See References.
Consequences:
Gain Access
References:
- libpng Web site, libpng Home Page at http://www.libpng.org/pub/png/libpng.html.
- Libpng-1.2.26 security advisory, April 12, 2008, bug in libpng at http://libpng.sourceforge.net/Advisory-1.2.26.txt.
- oCERT Advisories #2008-003, libpng zero-length chunks incorrect handling at http://www.ocert.org/advisories/ocert-2008-003.html.
- BID-28770: Libpng Library Unknown Chunk Handler Vulnerability
- CVE-2008-1382: libpng 1.0.6 through 1.0.32, 1.2.0 through 1.2.26, and 1.4.0beta01 through 1.4.0beta19 allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via a PNG file with zero length unknown chunks, which trigger an access of uninitialized memory.
- FrSIRT/ADV-2008-1225: Libpng Unknown Chunks Handling Uninitialized Memory Vulnerability
- GLSA-200804-15: libpng: Execution of arbitrary code
- GLSA-200805-10: Pngcrush: User-assisted execution of arbitrary code
- MDVSA-2008:156: Updated libpng packages fix vulnerability
- SA29792: libpng Unknown Chunk Processing Uninitialized Memory Access
- SA30157: Pngcrush libpng Unknown Chunk Processing Uninitialized Memory Access
- SECTRACK ID: 1019840: libpng Bug in Processing Zero Length Chunks May Let Remote Users Deny Service or Execute Arbitrary Code
- SUSE-SR:2008:010: SUSE Security Summary Report
Reported:
Apr 12, 2008
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