Off-by-one error in the inflate function in Zlib.xs in Compress::Raw::Zlib Perl module before 2.017, as used in AMaViS, SpamAssassin, and possibly other products, allows context-dependent attackers to cause a denial of service (hang or crash) via a crafted zlib compressed stream that triggers a heap-based buffer overflow, as exploited in the wild by Trojan.Downloader-71014 in June 2009.
article.gmane.org/gmane.mail.virus.amavis.user/33635
article.gmane.org/gmane.mail.virus.amavis.user/33638
lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html
osvdb.org/55041
secunia.com/advisories/35422
secunia.com/advisories/35685
secunia.com/advisories/35689
secunia.com/advisories/35876
security.gentoo.org/glsa/glsa-200908-07.xml
thread.gmane.org/gmane.mail.virus.amavis.user/33635
www.mandriva.com/security/advisories?name=MDVSA-2009:157
www.securityfocus.com/bid/35307
www.vupen.com/english/advisories/2009/1571
bugs.gentoo.org/show_bug.cgi?id=273141
bugzilla.redhat.com/show_bug.cgi?id=504386
exchange.xforce.ibmcloud.com/vulnerabilities/51062
usn.ubuntu.com/794-1/
www.redhat.com/archives/fedora-package-announce/2009-July/msg00607.html