===================================================================== CERT-Renater Note d'Information No. 2005/VULN397 _____________________________________________________________________ DATE : 22/06/2005 HARDWARE PLATFORM(S) : / OPERATING SYSTEM(S) : Systems running SpamAssassin, Vipul's Razor. ====================================================================== - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200506-17 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: SpamAssassin 3, Vipul's Razor: Denial of Service vulnerability Date: June 21, 2005 Bugs: #94722, #95492 ID: 200506-17 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== SpamAssassin and Vipul's Razor are vulnerable to a Denial of Service attack when handling certain malformed messages. Background ========== SpamAssassin is an extensible email filter which is used to identify junk email. Vipul's Razor is a client for a distributed, collaborative spam detection and filtering network. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 mail-filter/spamassassin < 3.0.4 >= 3.0.4 < 3.0.1 2 mail-filter/razor < 2.71 >= 2.71 ------------------------------------------------------------------- 2 affected packages on all of their supported architectures. ------------------------------------------------------------------- Description =========== SpamAssassin and Vipul's Razor contain a Denial of Service vulnerability when handling special misformatted long message headers. Impact ====== By sending a specially crafted message an attacker could cause a Denial of Service attack against the SpamAssassin/Vipul's Razor server. Workaround ========== There is no known workaround at this time. Resolution ========== All SpamAssassin users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=mail-filter/spamassassin-3.0.4" All Vipul's Razor users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=mail-filter/razor-2.71" References ========== [ 1 ] CAN-2005-1266 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1266 [ 2 ] SpamAssassin Announcement http://mail-archives.apache.org/mod_mbox/spamassassin-announce/200506.mbox/%3c17072.35054.586017.822288@proton.pathname.com%3e [ 3 ] Vipul's Razor Announcement http://sourceforge.net/mailarchive/forum.php?thread_id=7520323&forum_id=4259 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200506-17.xml Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security at gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org. License ======= Copyright 2005 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.0 ====================================================================== ========================================================= Les serveurs de référence du CERT-Renater http://www.urec.fr/securite http://www.cru.fr/securite http://www.renater.fr ========================================================= + CERT-RENATER | tel : 01-53-94-20-44 + + 151 bd de l'Hopital | fax : 01-53-94-20-41 + + 75013 Paris | email: certsvp@renater.fr + =========================================================