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Insecure Library Loading
Moderately critical

ClamAV Multiple Vulnerabilities

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Release Date:  2007-05-11    Last Update:  2007-06-12    Views:  17,160

Secunia Advisory SA25244

Where:

From remote

Impact:

DoS

Solution Status:

Vendor Patch

CVE Reference(s):

Description


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

1) An error exists within the OLE2 parser when handling objects with malformed FAT partitions and large property sizes. This can be exploited to cause a DoS due to storage and CPU resource consumption by scanning a specially crafted OLE2 file.

2) An error in the processing of RAR files can be exploited to crash the process via a specially crafted RAR file.

3) A boundary error exists within the file /libclamav/unsp.c, which can be exploited to crash the process via a specially crafted NsPacked file.

4) An incorrect regular expression in libclamav/phishcheck.c can be exploited to cause a DoS by consuming all available CPU resources via a specially crafted file.

Successful exploitation may depend upon the regular expression implementation used.


Solution:
Update to ClamAV version 0.90.3.

Further details available to Secunia VIM customers

Provided and/or discovered by:
1) Victor Stinner, INL.
2) Elliot
3) & 4) Edwin Török

Original Advisory:
1) http://news.gmane.org/gmane.comp.security.virus.clamav.devel/cutoff=2853
2) https://wwws.clamav.net/bugzilla/show_bug.cgi?id=521
3) https://wwws.clamav.net/bugzilla/show_bug.cgi?id=464
4) https://wwws.clamav.net/bugzilla/show_bug.cgi?id=497

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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