Synopsis: Moderate: krb5 security update Issue Date: 2011-12-06 CVE Numbers: CVE-2011-1530 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). A NULL pointer dereference flaw was found in the way the MIT Kerberos KDC processed certain TGS (Ticket-granting Server) requests. A remote, authenticated attacker could use this flaw to crash the KDC via a specially-crafted TGS request. (CVE-2011-1530) All krb5 users should upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the updated packages, the krb5kdc daemon will be restarted automatically. SL6: i386 krb5-debuginfo-1.9-22.el6_2.1.i686.rpm krb5-devel-1.9-22.el6_2.1.i686.rpm krb5-libs-1.9-22.el6_2.1.i686.rpm krb5-pkinit-openssl-1.9-22.el6_2.1.i686.rpm krb5-server-1.9-22.el6_2.1.i686.rpm krb5-server-ldap-1.9-22.el6_2.1.i686.rpm krb5-workstation-1.9-22.el6_2.1.i686.rpm x86_64 krb5-debuginfo-1.9-22.el6_2.1.i686.rpm krb5-debuginfo-1.9-22.el6_2.1.x86_64.rpm krb5-devel-1.9-22.el6_2.1.i686.rpm krb5-devel-1.9-22.el6_2.1.x86_64.rpm krb5-libs-1.9-22.el6_2.1.i686.rpm krb5-libs-1.9-22.el6_2.1.x86_64.rpm krb5-pkinit-openssl-1.9-22.el6_2.1.x86_64.rpm krb5-server-1.9-22.el6_2.1.x86_64.rpm krb5-server-ldap-1.9-22.el6_2.1.i686.rpm krb5-server-ldap-1.9-22.el6_2.1.x86_64.rpm krb5-workstation-1.9-22.el6_2.1.x86_64.rpm - Scientific Linux Development Team