Some vulnerabilities have been reported in Clam AntiVirus. One has an unknown impact, while others can be exploited by malicious people to cause a DoS (Denial of Service) or to compromise a vulnerable system.
1) An unspecified file descriptor leak error exists within libclamav/chmunpack.c.
2) A signedness error exists within the "cab_unstore()" function in libclamav/cab.c. This can be exploited to cause a stack based buffer overflow via a specially crafted ".cab" file, and may allow execution of arbitrary code or crashing of the clamd process.
3) A file descriptor leak error when handling PDF files with empty objects exists within libclamav/pdf.c. This can potentially be exploited to cause a DoS by e.g. tricking an automated system into processing specially crafted PDF files.
Solution: Update to version 0.90.2.
Provided and/or discovered by: 1, 3) Reported by the vendor
2) iDefense Labs
Original Advisory: http://sourceforge.net/project/shownotes.php?release_id=500765
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Subject: Clam AntiVirus Multiple Vulnerabilities
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