Scientific Linux: Key krb5 Security Patch – Serious Authentication Failure

Date: Wed, 1 Aug 2012 08:55:18 -0500
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Sender: Security Errata for Scientific Linux
 
From: Patrick Riehecky 
Subject: Security ERRATA Important: krb5 on SL6.x i386/x86_64
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Synopsis: Important: krb5 security update
Issue Date: 2012-07-31
CVE Numbers: CVE-2012-1013
 CVE-2012-1015

Kerberos is a network authentication system which allows clients and
servers to authenticate to each other using symmetric encryption and a
trusted third-party, the Key Distribution Center (KDC).

An uninitialized pointer use flaw was found in the way the MIT Kerberos KDC
handled initial authentication requests (AS-REQ). A remote,
unauthenticated attacker could use this flaw to crash the KDC via a
specially-crafted AS-REQ request. (CVE-2012-1015)

A NULL pointer dereference flaw was found in the MIT Kerberos
administration daemon, kadmind. A Kerberos administrator who has the
"create" privilege could use this flaw to crash kadmind. (CVE-2012-1013)

All krb5 users should upgrade to these updated packages, which contain
backported patches to correct these issues. After installing the updated
packages, the krb5kdc and kadmind daemons will be restarted automatically.

SL6:
 i386
 krb5-debuginfo-1.9-33.el6_3.2.i686.rpm
 krb5-devel-1.9-33.el6_3.2.i686.rpm
 krb5-libs-1.9-33.el6_3.2.i686.rpm
 krb5-pkinit-openssl-1.9-33.el6_3.2.i686.rpm
 krb5-server-1.9-33.el6_3.2.i686.rpm
 krb5-server-ldap-1.9-33.el6_3.2.i686.rpm
 krb5-workstation-1.9-33.el6_3.2.i686.rpm
 x86_64
 krb5-debuginfo-1.9-33.el6_3.2.i686.rpm
 krb5-debuginfo-1.9-33.el6_3.2.x86_64.rpm
 krb5-devel-1.9-33.el6_3.2.i686.rpm
 krb5-devel-1.9-33.el6_3.2.x86_64.rpm
 krb5-libs-1.9-33.el6_3.2.i686.rpm
 krb5-libs-1.9-33.el6_3.2.x86_64.rpm
 krb5-pkinit-openssl-1.9-33.el6_3.2.x86_64.rpm
 krb5-server-1.9-33.el6_3.2.x86_64.rpm
 krb5-server-ldap-1.9-33.el6_3.2.i686.rpm
 krb5-server-ldap-1.9-33.el6_3.2.x86_64.rpm
 krb5-workstation-1.9-33.el6_3.2.x86_64.rpm

- Scientific Linux Development Team