From klieber@gentoo.org Fri May 28 02:31:31 2004 From: Kurt Lieber To: gentoo-announce@lists.gentoo.org Cc: bugtraq@securityfocus.com, full-disclosure@lists.netsys.com, security-alerts@linuxsecurity.com Date: Thu, 27 May 2004 08:26:28 -0400 Subject: [Full-Disclosure] [ GLSA 200405-23 ] Heimdal: Kerberos 4 buffer overflow in kadmin - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200405-23 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: Heimdal: Kerberos 4 buffer overflow in kadmin Date: May 27, 2004 Bugs: #50208 ID: 200405-23 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== A possible buffer overflow in the Kerberos 4 component of Heimdal has been discovered. Background ========== Heimdal is a free implementation of Kerberos. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-crypt/heimdal < 0.6.2 >= 0.6.2 Description =========== A buffer overflow was discovered in kadmind, a server for administrative access to the Kerberos database. Impact ====== By sending a specially formatted message to kadmind, a remote attacker may be able to crash kadmind causing a denial of service, or execute arbitrary code with the permissions of the kadmind process. Workaround ========== For a temporary workaround, providing you do not require Kerberos 4 support, you may turn off Kerberos 4 kadmin by running kadmind with the --no-kerberos4 option. Resolution ========== All Heimdal users should upgrade to the latest stable version: # emerge sync # emerge -pv ">=app-crypt/heimdal-0.6.2" # emerge ">=app-crypt/heimdal-0.6.2" References ========== [ 1 ] Heimdal 0.6.2 Release Notice http://www.pdc.kth.se/heimdal/advisory/2004-05-06/ [ 2 ] CAN-2004-0434 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0434 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200405-23.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@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org. License ======= Copyright 2004 Gentoo Technologies, 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/1.0 [ Part 2, Application/PGP-SIGNATURE 196bytes. ] [ Unable to print this part. ]