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Vigil@nce - ClamAV: denial of service via an icon

May 2010 by Vigil@nce

This bulletin was written by Vigil@nce : http://vigilance.fr/

SYNTHESIS OF THE VULNERABILITY

An attacker can send a PE file with a malicious icon, in order to
stop ClamAV.

Severity: 1/4

Creation date: 24/05/2010

DESCRIPTION OF THE VULNERABILITY

The PE format is used by Windows executable programs. It can
contain icons.

The parseicon() function of the libclamav/pe_icons.c file
resizes/scales icons. However, a computation error forces a read
at an invalid memory address.

An attacker can therefore send a PE file with a malicious icon, in
order to stop ClamAV.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/ClamAV-denial-of-service-via-an-icon-9661


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