[IVIZ-08-011] ClamAV lzh unpacking segmentation fault Dec 10 2008 11:48AM
iViZ Security Advisories (advisories ivizsecurity com)
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[ iViZ Security Advisory 08-011 10/12/2008 ]
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iViZ Techno Solutions Pvt. Ltd.
http://www.ivizsecurity.com
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* Title: ClamAV lzh unpacking segmentation fault
* Date: 10/12/2008
* Software: ClamAV 0.93.3 and prior

--[ Synopsis:

Clamav uses an external unpacker, which can be deterministically crashed,
when processing corrupted LZH files.

--[ Affected Software:

* ClamAV 0.93.3 and prior

--[ Non Affected Software:

* ClamAV 0.94 and newer

--[ Impact:

Remote DoS, possibly remote code execution.

--[ Vendor response:

* "Support for external unpackers has been dropped in 0.94 for
security issues".

--[ Credits:

This vulnerability was discovered by Security Researcher
Jonathan Brossard from iViZ Techno Solutions Pvt. Ltd.

--[ Disclosure timeline:

* First private disclosure to vendor on October 14th 2008
* First vendor reply on October 15th 2008 : issue fixed.

--[ Reference:

http://www.ivizsecurity.com/security-advisory.html

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