ClamAV before 0.93 allows remote attackers to bypass the scanning enging via a RAR file with an invalid version number, which cannot be parsed by ClamAV but can be extracted by Winrar.
https://wwws.clamav.net/bugzilla/show_bug.cgi?id=541
https://exchange.xforce.ibmcloud.com/vulnerabilities/41874
http://www.vupen.com/english/advisories/2008/2584
http://www.us-cert.gov/cas/techalerts/TA08-260A.html
http://www.securityfocus.com/bid/28784
http://www.mandriva.com/security/advisories?name=MDVSA-2008:088
http://up2date.astaro.com/2008/08/up2date_asg_v7300_ga_released.html
http://security.gentoo.org/glsa/glsa-200805-19.xml
http://secunia.com/advisories/31882
http://secunia.com/advisories/31576
http://secunia.com/advisories/30328
http://secunia.com/advisories/29891
http://lists.opensuse.org/opensuse-security-announce/2008-04/msg00009.html
http://lists.apple.com/archives/security-announce//2008/Sep/msg00005.html