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Critical Update: Red Hat 6 RHSA-2010:0863-02 Addresses KDC Flaw

Updated krb5 packages that fix one security issue are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having [More...]. ==================================================================== Red Hat Security Advisory Synopsis: Important: krb5 security update Advisory ID: RHSA-2010:0863-02 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2010:0863.html Issue date: 2010-11-10 CVE Names: CVE-2010-1322 ==================================================================== 1. Summary: Updated krb5 packages that fix one security issue are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 3. Description: 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 TGS (Ticket-granting Server) request messages. A remote, authenticated attacker could use this flaw to crash the KDC or, possibly, disclose KDC memory or execute arbitrary code with the privileges of the KDC (krb5kdc). (CVE-2010-1322) Red Hat would like to thank the MIT Kerberos Team for reporting this issue. Upstream acknowledges Mike Roszkowski as theoriginal reporter. 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. 4. Solution: Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at 5. Bugs fixed (http://bugzilla.redhat.com/): 636335 - CVE-2010-1322 krb5: KDC uninitialized pointer crash in authorization data handling (MITKRB5-SA-2010-006) 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: i386: krb5-debuginfo-1.8.2-3.el6_0.1.i686.rpm krb5-libs-1.8.2-3.el6_0.1.i686.rpm krb5-pkinit-openssl-1.8.2-3.el6_0.1.i686.rpm krb5-workstation-1.8.2-3.el6_0.1.i686.rpm x86_64: krb5-debuginfo-1.8.2-3.el6_0.1.i686.rpm krb5-debuginfo-1.8.2-3.el6_0.1.x86_64.rpm krb5-libs-1.8.2-3.el6_0.1.i686.rpm krb5-libs-1.8.2-3.el6_0.1.x86_64.rpm krb5-pkinit-openssl-1.8.2-3.el6_0.1.x86_64.rpm krb5-workstation-1.8.2-3.el6_0.1.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): Source: i386: krb5-debuginfo-1.8.2-3.el6_0.1.i686.rpm krb5-devel-1.8.2-3.el6_0.1.i686.rpm krb5-server-1.8.2-3.el6_0.1.i686.rpm krb5-server-ldap-1.8.2-3.el6_0.1.i686.rpm x86_64: krb5-debuginfo-1.8.2-3.el6_0.1.i686.rpm krb5-debuginfo-1.8.2-3.el6_0.1.x86_64.rpm krb5-devel-1.8.2-3.el6_0.1.i686.rpm krb5-devel-1.8.2-3.el6_0.1.x86_64.rpm krb5-server-1.8.2-3.el6_0.1.x86_64.rpm krb5-server-ldap-1.8.2-3.el6_0.1.i686.rpm krb5-server-ldap-1.8.2-3.el6_0.1.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: x86_64: krb5-debuginfo-1.8.2-3.el6_0.1.i686.rpm krb5-debuginfo-1.8.2-3.el6_0.1.x86_64.rpm krb5-libs-1.8.2-3.el6_0.1.i686.rpm krb5-libs-1.8.2-3.el6_0.1.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v.6): Source: x86_64: krb5-debuginfo-1.8.2-3.el6_0.1.i686.rpm krb5-debuginfo-1.8.2-3.el6_0.1.x86_64.rpm krb5-devel-1.8.2-3.el6_0.1.i686.rpm krb5-devel-1.8.2-3.el6_0.1.x86_64.rpm krb5-pkinit-openssl-1.8.2-3.el6_0.1.x86_64.rpm krb5-server-1.8.2-3.el6_0.1.x86_64.rpm krb5-server-ldap-1.8.2-3.el6_0.1.i686.rpm krb5-server-ldap-1.8.2-3.el6_0.1.x86_64.rpm krb5-workstation-1.8.2-3.el6_0.1.x86_64.rpm Red Hat Enterprise Linux Server (v.6): Source: i386: krb5-debuginfo-1.8.2-3.el6_0.1.i686.rpm krb5-devel-1.8.2-3.el6_0.1.i686.rpm krb5-libs-1.8.2-3.el6_0.1.i686.rpm krb5-pkinit-openssl-1.8.2-3.el6_0.1.i686.rpm krb5-server-1.8.2-3.el6_0.1.i686.rpm krb5-server-ldap-1.8.2-3.el6_0.1.i686.rpm krb5-workstation-1.8.2-3.el6_0.1.i686.rpm ppc64: krb5-debuginfo-1.8.2-3.el6_0.1.ppc.rpm krb5-debuginfo-1.8.2-3.el6_0.1.ppc64.rpm krb5-devel-1.8.2-3.el6_0.1.ppc.rpm krb5-devel-1.8.2-3.el6_0.1.ppc64.rpm krb5-libs-1.8.2-3.el6_0.1.ppc.rpm krb5-libs-1.8.2-3.el6_0.1.ppc64.rpm krb5-pkinit-openssl-1.8.2-3.el6_0.1.ppc64.rpm krb5-server-1.8.2-3.el6_0.1.ppc64.rpm krb5-server-ldap-1.8.2-3.el6_0.1.ppc.rpm krb5-server-ldap-1.8.2-3.el6_0.1.ppc64.rpm krb5-workstation-1.8.2-3.el6_0.1.ppc64.rpm s390x: krb5-debuginfo-1.8.2-3.el6_0.1.s390.rpm krb5-debuginfo-1.8.2-3.el6_0.1.s390x.rpm krb5-devel-1.8.2-3.el6_0.1.s390.rpm krb5-devel-1.8.2-3.el6_0.1.s390x.rpm krb5-libs-1.8.2-3.el6_0.1.s390.rpm krb5-libs-1.8.2-3.el6_0.1.s390x.rpm krb5-pkinit-openssl-1.8.2-3.el6_0.1.s390x.rpm krb5-server-1.8.2-3.el6_0.1.s390x.rpm krb5-server-ldap-1.8.2-3.el6_0.1.s390.rpm krb5-server-ldap-1.8.2-3.el6_0.1.s390x.rpm krb5-workstation-1.8.2-3.el6_0.1.s390x.rpm x86_64: krb5-debuginfo-1.8.2-3.el6_0.1.i686.rpm krb5-debuginfo-1.8.2-3.el6_0.1.x86_64.rpm krb5-devel-1.8.2-3.el6_0.1.i686.rpm krb5-devel-1.8.2-3.el6_0.1.x86_64.rpm krb5-libs-1.8.2-3.el6_0.1.i686.rpm krb5-libs-1.8.2-3.el6_0.1.x86_64.rpm krb5-pkinit-openssl-1.8.2-3.el6_0.1.x86_64.rpm krb5-server-1.8.2-3.el6_0.1.x86_64.rpm krb5-server-ldap-1.8.2-3.el6_0.1.i686.rpm krb5-server-ldap-1.8.2-3.el6_0.1.x86_64.rpm krb5-workstation-1.8.2-3.el6_0.1.x86_64.rpm Red Hat Enterprise Linux Workstation (v.6): Source: i386: krb5-debuginfo-1.8.2-3.el6_0.1.i686.rpm krb5-devel-1.8.2-3.el6_0.1.i686.rpm krb5-libs-1.8.2-3.el6_0.1.i686.rpm krb5-pkinit-openssl-1.8.2-3.el6_0.1.i686.rpm krb5-server-1.8.2-3.el6_0.1.i686.rpm krb5-server-ldap-1.8.2-3.el6_0.1.i686.rpm krb5-workstation-1.8.2-3.el6_0.1.i686.rpm x86_64: krb5-debuginfo-1.8.2-3.el6_0.1.i686.rpm krb5-debuginfo-1.8.2-3.el6_0.1.x86_64.rpm krb5-devel-1.8.2-3.el6_0.1.i686.rpm krb5-devel-1.8.2-3.el6_0.1.x86_64.rpm krb5-libs-1.8.2-3.el6_0.1.i686.rpm krb5-libs-1.8.2-3.el6_0.1.x86_64.rpm krb5-pkinit-openssl-1.8.2-3.el6_0.1.x86_64.rpm krb5-server-1.8.2-3.el6_0.1.x86_64.rpm krb5-server-ldap-1.8.2-3.el6_0.1.i686.rpm krb5-server-ldap-1.8.2-3.el6_0.1.x86_64.rpm krb5-workstation-1.8.2-3.el6_0.1.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key#package 7. References: https://access.redhat.com/security/cve/CVE-2010-1322 https://access.redhat.com/security/updates/classification#important 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2010 Red Hat, Inc. . Red Hat announces a critical update for the krb5 package addressing a security vulnerability impacting various architectures in RHEL 6.. RHEL 6 Security Advisory, krb5 KDC Exploit, Red Hat Important Update. . Severity: Important. LinuxSecurity.com Team

Nov 10, 2010 •Important Red Hat