SpamAssassin before 3.1.3, when running with vpopmail and the paranoid (-P) switch, allows remote attackers to execute arbitrary commands via a crafted message that is not properly handled when invoking spamd with the virtual pop username.
secunia.com/advisories/20430
secunia.com/advisories/20443
secunia.com/advisories/20482
secunia.com/advisories/20531
secunia.com/advisories/20566
secunia.com/advisories/20692
securitytracker.com/id?1016230
securitytracker.com/id?1016235
www.debian.org/security/2006/dsa-1090
www.gentoo.org/security/en/glsa/glsa-200606-09.xml
www.mandriva.com/security/advisories?name=MDKSA-2006:103
www.nabble.com/ANNOUNCE%3A-Apache-SpamAssassin-3.1.3-available%21-t1736096.html
www.redhat.com/support/errata/RHSA-2006-0543.html
www.securityfocus.com/archive/1/436288/100/0/threaded
www.securityfocus.com/bid/18290
www.trustix.org/errata/2006/0034/
www.vupen.com/english/advisories/2006/2148
exchange.xforce.ibmcloud.com/vulnerabilities/27008
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9184