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ClamAV Multiple Vulnerabilities
Secunia Advisory: SA28117
Release Date: 2007-12-19
Last Update: 2008-01-02
Popularity: 11,788 views

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

Software:Clam AntiVirus (clamav) 0.x

Binary Analysis: BA331 :: Available for 1 Credit

Secunia CVSS-2 Score: Available in Secunia business solutions

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

Description:
Some vulnerabilities have been reported in ClamAV, where one vulnerability has an unknown impact and others can be exploited by malicious people to cause a DoS (Denial of Service) or compromise a vulnerable system.

1) An integer overflow error exists within the "cli_scanpe()" function when handling MEW packed executables. This can be exploited to cause a heap-based buffer overflow via specially crafted "ssize" and "dsize" values.

Successful exploitation allows execution of arbitrary code.

2) An off-by-one error exists within libclamav/mspack.c when handling MSZIP compressed files. This can be exploited to e.g. crash the scanner or potentially execute arbitrary code via a specially crafted MSZIP compressed file.

3) An boundary error exists within the bzip2 "BZ_GET_FAST()" and "BZ_GET_FAST_C()" decompression macros in libclamav/nsis/bzlib_private.h.

The vulnerabilities are reported in versions prior to 0.92.

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



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