ClamAV 0.80 and earlier allows remote attackers to cause a denial of service (clamd daemon crash) via a ZIP file with malformed headers.
http://www.trustix.org/errata/2005/0003/
http://www.mandriva.com/security/advisories?name=MDKSA-2005:025
http://www.gentoo.org/security/en/glsa/glsa-200501-46.xml
http://sourceforge.net/project/shownotes.php?release_id=300116
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000928