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Insecure Library Loading
Highly critical

ClamAV Multiple Vulnerabilities

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Release Date:  2006-04-06    Last Update:  2006-04-10    Views:  22,272

Secunia Advisory SA19534

Where:

From remote

Impact:

DoS, System access

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Some vulnerabilities have been reported in ClamAV, which potentially can be exploited by malicious people to cause a DoS (Denial of Service) and compromise a vulnerable system.

1) An integer overflow error within the PE header parser in the "cli_scanpe()" function in libclamav/pe.c can be exploited to cause a heap-based buffer overflow and execute arbitrary code on a vulnerable system via a specially crafted UPX file.

Successful exploitation requires that the ArchiveMaxFileSize option is disabled.

2) Some format string errors in the logging handling in "shared/output.c" may be exploited to execute arbitrary code.

3) An out-of-bounds memory access error in the "cli_bitset_test()" function in "ibclamav/others.c" may be exploited to cause a crash.

The vulnerabilities have been reported in version 0.88. Prior versions may also be affected.


Solution:
Update to version 0.88.1.

Further details available to Secunia VIM customers

Provided and/or discovered by:
1) Damian Put
2) Reported by the vendor.
3) David Luyer

Original Advisory:
Debian:
http://www.us.debian.org/security/2006/dsa-1024

Damian Put:
http://www.overflow.pl/adv/clamavupxinteger.txt

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: ClamAV Multiple Vulnerabilities

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