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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2013.0400 Moderate: krb5 security update 19 March 2013 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: krb5 Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Red Hat Enterprise Linux WS/Desktop 6 Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2013-1415 CVE-2012-1016 Reference: ASB-2013.0036 ASB-2013.0027 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2013-0656.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: krb5 security update Advisory ID: RHSA-2013:0656-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2013-0656.html Issue date: 2013-03-18 CVE Names: CVE-2012-1016 CVE-2013-1415 ===================================================================== 1. Summary: Updated krb5 packages that fix two security issues are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links 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). When a client attempts to use PKINIT to obtain credentials from the KDC, the client can specify, using an issuer and serial number, which of the KDC's possibly-many certificates the client has in its possession, as a hint to the KDC that it should use the corresponding key to sign its response. If that specification was malformed, the KDC could attempt to dereference a NULL pointer and crash. (CVE-2013-1415) When a client attempts to use PKINIT to obtain credentials from the KDC, the client will typically format its request to conform to the specification published in RFC 4556. For interoperability reasons, clients and servers also provide support for an older, draft version of that specification. If a client formatted its request to conform to this older version of the specification, with a non-default key agreement option, it could cause the KDC to attempt to dereference a NULL pointer and crash. (CVE-2012-1016) All krb5 users should upgrade to these updated packages, which contain backported patches to correct these issues. 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 https://access.redhat.com/knowledge/articles/11258 5. Bugs fixed (http://bugzilla.redhat.com/): 914749 - CVE-2013-1415 krb5: PKINIT null pointer deref leads to DoS (pkinit_check_kdc_pkid()) 917840 - CVE-2012-1016 krb5: PKINIT null pointer deref leads to DoS 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/krb5-1.10.3-10.el6_4.1.src.rpm i386: krb5-debuginfo-1.10.3-10.el6_4.1.i686.rpm krb5-libs-1.10.3-10.el6_4.1.i686.rpm krb5-pkinit-openssl-1.10.3-10.el6_4.1.i686.rpm krb5-workstation-1.10.3-10.el6_4.1.i686.rpm x86_64: krb5-debuginfo-1.10.3-10.el6_4.1.i686.rpm krb5-debuginfo-1.10.3-10.el6_4.1.x86_64.rpm krb5-libs-1.10.3-10.el6_4.1.i686.rpm krb5-libs-1.10.3-10.el6_4.1.x86_64.rpm krb5-pkinit-openssl-1.10.3-10.el6_4.1.x86_64.rpm krb5-workstation-1.10.3-10.el6_4.1.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/krb5-1.10.3-10.el6_4.1.src.rpm i386: krb5-debuginfo-1.10.3-10.el6_4.1.i686.rpm krb5-devel-1.10.3-10.el6_4.1.i686.rpm krb5-server-1.10.3-10.el6_4.1.i686.rpm krb5-server-ldap-1.10.3-10.el6_4.1.i686.rpm x86_64: krb5-debuginfo-1.10.3-10.el6_4.1.i686.rpm krb5-debuginfo-1.10.3-10.el6_4.1.x86_64.rpm krb5-devel-1.10.3-10.el6_4.1.i686.rpm krb5-devel-1.10.3-10.el6_4.1.x86_64.rpm krb5-server-1.10.3-10.el6_4.1.x86_64.rpm krb5-server-ldap-1.10.3-10.el6_4.1.i686.rpm krb5-server-ldap-1.10.3-10.el6_4.1.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/krb5-1.10.3-10.el6_4.1.src.rpm x86_64: krb5-debuginfo-1.10.3-10.el6_4.1.i686.rpm krb5-debuginfo-1.10.3-10.el6_4.1.x86_64.rpm krb5-libs-1.10.3-10.el6_4.1.i686.rpm krb5-libs-1.10.3-10.el6_4.1.x86_64.rpm krb5-pkinit-openssl-1.10.3-10.el6_4.1.x86_64.rpm krb5-workstation-1.10.3-10.el6_4.1.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/krb5-1.10.3-10.el6_4.1.src.rpm x86_64: krb5-debuginfo-1.10.3-10.el6_4.1.i686.rpm krb5-debuginfo-1.10.3-10.el6_4.1.x86_64.rpm krb5-devel-1.10.3-10.el6_4.1.i686.rpm krb5-devel-1.10.3-10.el6_4.1.x86_64.rpm krb5-server-1.10.3-10.el6_4.1.x86_64.rpm krb5-server-ldap-1.10.3-10.el6_4.1.i686.rpm krb5-server-ldap-1.10.3-10.el6_4.1.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/krb5-1.10.3-10.el6_4.1.src.rpm i386: krb5-debuginfo-1.10.3-10.el6_4.1.i686.rpm krb5-devel-1.10.3-10.el6_4.1.i686.rpm krb5-libs-1.10.3-10.el6_4.1.i686.rpm krb5-pkinit-openssl-1.10.3-10.el6_4.1.i686.rpm krb5-server-1.10.3-10.el6_4.1.i686.rpm krb5-server-ldap-1.10.3-10.el6_4.1.i686.rpm krb5-workstation-1.10.3-10.el6_4.1.i686.rpm ppc64: krb5-debuginfo-1.10.3-10.el6_4.1.ppc.rpm krb5-debuginfo-1.10.3-10.el6_4.1.ppc64.rpm krb5-devel-1.10.3-10.el6_4.1.ppc.rpm krb5-devel-1.10.3-10.el6_4.1.ppc64.rpm krb5-libs-1.10.3-10.el6_4.1.ppc.rpm krb5-libs-1.10.3-10.el6_4.1.ppc64.rpm krb5-pkinit-openssl-1.10.3-10.el6_4.1.ppc64.rpm krb5-server-1.10.3-10.el6_4.1.ppc64.rpm krb5-server-ldap-1.10.3-10.el6_4.1.ppc.rpm krb5-server-ldap-1.10.3-10.el6_4.1.ppc64.rpm krb5-workstation-1.10.3-10.el6_4.1.ppc64.rpm s390x: krb5-debuginfo-1.10.3-10.el6_4.1.s390.rpm krb5-debuginfo-1.10.3-10.el6_4.1.s390x.rpm krb5-devel-1.10.3-10.el6_4.1.s390.rpm krb5-devel-1.10.3-10.el6_4.1.s390x.rpm krb5-libs-1.10.3-10.el6_4.1.s390.rpm krb5-libs-1.10.3-10.el6_4.1.s390x.rpm krb5-pkinit-openssl-1.10.3-10.el6_4.1.s390x.rpm krb5-server-1.10.3-10.el6_4.1.s390x.rpm krb5-server-ldap-1.10.3-10.el6_4.1.s390.rpm krb5-server-ldap-1.10.3-10.el6_4.1.s390x.rpm krb5-workstation-1.10.3-10.el6_4.1.s390x.rpm x86_64: krb5-debuginfo-1.10.3-10.el6_4.1.i686.rpm krb5-debuginfo-1.10.3-10.el6_4.1.x86_64.rpm krb5-devel-1.10.3-10.el6_4.1.i686.rpm krb5-devel-1.10.3-10.el6_4.1.x86_64.rpm krb5-libs-1.10.3-10.el6_4.1.i686.rpm krb5-libs-1.10.3-10.el6_4.1.x86_64.rpm krb5-pkinit-openssl-1.10.3-10.el6_4.1.x86_64.rpm krb5-server-1.10.3-10.el6_4.1.x86_64.rpm krb5-server-ldap-1.10.3-10.el6_4.1.i686.rpm krb5-server-ldap-1.10.3-10.el6_4.1.x86_64.rpm krb5-workstation-1.10.3-10.el6_4.1.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/krb5-1.10.3-10.el6_4.1.src.rpm i386: krb5-debuginfo-1.10.3-10.el6_4.1.i686.rpm krb5-devel-1.10.3-10.el6_4.1.i686.rpm krb5-libs-1.10.3-10.el6_4.1.i686.rpm krb5-pkinit-openssl-1.10.3-10.el6_4.1.i686.rpm krb5-server-1.10.3-10.el6_4.1.i686.rpm krb5-server-ldap-1.10.3-10.el6_4.1.i686.rpm krb5-workstation-1.10.3-10.el6_4.1.i686.rpm x86_64: krb5-debuginfo-1.10.3-10.el6_4.1.i686.rpm krb5-debuginfo-1.10.3-10.el6_4.1.x86_64.rpm krb5-devel-1.10.3-10.el6_4.1.i686.rpm krb5-devel-1.10.3-10.el6_4.1.x86_64.rpm krb5-libs-1.10.3-10.el6_4.1.i686.rpm krb5-libs-1.10.3-10.el6_4.1.x86_64.rpm krb5-pkinit-openssl-1.10.3-10.el6_4.1.x86_64.rpm krb5-server-1.10.3-10.el6_4.1.x86_64.rpm krb5-server-ldap-1.10.3-10.el6_4.1.i686.rpm krb5-server-ldap-1.10.3-10.el6_4.1.x86_64.rpm krb5-workstation-1.10.3-10.el6_4.1.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://www.redhat.com/security/data/cve/CVE-2012-1016.html https://www.redhat.com/security/data/cve/CVE-2013-1415.html https://access.redhat.com/security/updates/classification/#moderate http://tools.ietf.org/html/rfc4556 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2013 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFRR1g9XlSAg2UNWIIRAibEAKCEYZ5I/HIGOCUzaUjggFJJJHJcDQCfWEc4 klXheDQWzN0lGXWDN8o7g5E= =+g6V - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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