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Clam AntiVirus CHM Unpacker and PE Rebuilding Vulnerabilities
Secunia Advisory: SA22370
Release Date: 2006-10-16
Last Update: 2006-11-08
Popularity: 16,200 views

Critical:
Highly critical
Impact: DoS
System access
Where: From remote
Solution Status: Vendor Patch

Software:Clam AntiVirus (clamav) 0.x

Secunia CVSS-2 Score: Available in Secunia business solutions

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Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

Description:
Two vulnerabilities have been reported in Clam AntiVirus, which can be exploited by malicious people to cause a DoS (Denial of Service) or potentially compromise a vulnerable system.

1) An out-of-bounds memory access error in the CHM (Compressed HTML Help) unpacker in chmunpack.c can be exploited to crash the virus scanning service via a specially crafted CHM file.

2) An integer overflow error in rebuildpe.c when rebuilding PE files after unpacking can be exploited to cause a heap-based buffer overflow via a specially crafted executable.

Successful exploitation of this vulnerability may allow execution of arbitrary code.

The vulnerabilities are reported in version 0.88.4. Prior versions may also be affected.

Change Page:
[ 1 ] [ 2 ] [ 3 ]



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