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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2011.0145 Important: krb5 security update 9 February 2011 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: krb5 Publisher: Red Hat Operating System: Red Hat Enterprise Linux WS/Desktop 5 Red Hat Enterprise Linux Server 5 Red Hat Enterprise Linux WS/Desktop 6 Red Hat Enterprise Linux Server 6 UNIX variants (UNIX, Linux, OSX) Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2011-0282 CVE-2011-0281 CVE-2010-4022 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2011-0199.html https://rhn.redhat.com/errata/RHSA-2011-0200.html Comment: This bulletin contains two (2) Red Hat security advisories. This advisory references vulnerabilities in products which run on platforms other than Red Hat. It is recommended that administrators running krb5 check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: krb5 security update Advisory ID: RHSA-2011:0199-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-0199.html Issue date: 2011-02-08 CVE Names: CVE-2011-0281 CVE-2011-0282 ===================================================================== 1. Summary: Updated krb5 packages that fix two security issues are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having important 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: RHEL Desktop Workstation (v. 5 client) - i386, x86_64 Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - 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). A NULL pointer dereference flaw was found in the way the MIT Kerberos KDC processed principal names that were not null terminated, when the KDC was configured to use an LDAP back end. A remote attacker could use this flaw to crash the KDC via a specially-crafted request. (CVE-2011-0282) A denial of service flaw was found in the way the MIT Kerberos KDC processed certain principal names when the KDC was configured to use an LDAP back end. A remote attacker could use this flaw to cause the KDC to hang via a specially-crafted request. (CVE-2011-0281) Red Hat would like to thank the MIT Kerberos Team for reporting these issues. Upstream acknowledges Kevin Longfellow of Oracle Corporation as the original reporter of the CVE-2011-0281 issue. All krb5 users should upgrade to these updated packages, which contain a backported patch 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 http://kbase.redhat.com/faq/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 668719 - CVE-2011-0281 krb5: KDC hang when using LDAP backend caused by special principal name (MITKRB5-SA-2011-002) 668726 - CVE-2011-0282 krb5: KDC crash when using LDAP backend caused by a special principal name (MITKRB5-SA-2011-002) 6. Package List: Red Hat Enterprise Linux Desktop (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/krb5-1.6.1-55.el5_6.1.src.rpm i386: krb5-debuginfo-1.6.1-55.el5_6.1.i386.rpm krb5-libs-1.6.1-55.el5_6.1.i386.rpm krb5-workstation-1.6.1-55.el5_6.1.i386.rpm x86_64: krb5-debuginfo-1.6.1-55.el5_6.1.i386.rpm krb5-debuginfo-1.6.1-55.el5_6.1.x86_64.rpm krb5-libs-1.6.1-55.el5_6.1.i386.rpm krb5-libs-1.6.1-55.el5_6.1.x86_64.rpm krb5-workstation-1.6.1-55.el5_6.1.x86_64.rpm RHEL Desktop Workstation (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/krb5-1.6.1-55.el5_6.1.src.rpm i386: krb5-debuginfo-1.6.1-55.el5_6.1.i386.rpm krb5-devel-1.6.1-55.el5_6.1.i386.rpm krb5-server-1.6.1-55.el5_6.1.i386.rpm krb5-server-ldap-1.6.1-55.el5_6.1.i386.rpm x86_64: krb5-debuginfo-1.6.1-55.el5_6.1.i386.rpm krb5-debuginfo-1.6.1-55.el5_6.1.x86_64.rpm krb5-devel-1.6.1-55.el5_6.1.i386.rpm krb5-devel-1.6.1-55.el5_6.1.x86_64.rpm krb5-server-1.6.1-55.el5_6.1.x86_64.rpm krb5-server-ldap-1.6.1-55.el5_6.1.x86_64.rpm Red Hat Enterprise Linux (v. 5 server): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/krb5-1.6.1-55.el5_6.1.src.rpm i386: krb5-debuginfo-1.6.1-55.el5_6.1.i386.rpm krb5-devel-1.6.1-55.el5_6.1.i386.rpm krb5-libs-1.6.1-55.el5_6.1.i386.rpm krb5-server-1.6.1-55.el5_6.1.i386.rpm krb5-server-ldap-1.6.1-55.el5_6.1.i386.rpm krb5-workstation-1.6.1-55.el5_6.1.i386.rpm ia64: krb5-debuginfo-1.6.1-55.el5_6.1.i386.rpm krb5-debuginfo-1.6.1-55.el5_6.1.ia64.rpm krb5-devel-1.6.1-55.el5_6.1.ia64.rpm krb5-libs-1.6.1-55.el5_6.1.i386.rpm krb5-libs-1.6.1-55.el5_6.1.ia64.rpm krb5-server-1.6.1-55.el5_6.1.ia64.rpm krb5-server-ldap-1.6.1-55.el5_6.1.ia64.rpm krb5-workstation-1.6.1-55.el5_6.1.ia64.rpm ppc: krb5-debuginfo-1.6.1-55.el5_6.1.ppc.rpm krb5-debuginfo-1.6.1-55.el5_6.1.ppc64.rpm krb5-devel-1.6.1-55.el5_6.1.ppc.rpm krb5-devel-1.6.1-55.el5_6.1.ppc64.rpm krb5-libs-1.6.1-55.el5_6.1.ppc.rpm krb5-libs-1.6.1-55.el5_6.1.ppc64.rpm krb5-server-1.6.1-55.el5_6.1.ppc.rpm krb5-server-ldap-1.6.1-55.el5_6.1.ppc.rpm krb5-workstation-1.6.1-55.el5_6.1.ppc.rpm s390x: krb5-debuginfo-1.6.1-55.el5_6.1.s390.rpm krb5-debuginfo-1.6.1-55.el5_6.1.s390x.rpm krb5-devel-1.6.1-55.el5_6.1.s390.rpm krb5-devel-1.6.1-55.el5_6.1.s390x.rpm krb5-libs-1.6.1-55.el5_6.1.s390.rpm krb5-libs-1.6.1-55.el5_6.1.s390x.rpm krb5-server-1.6.1-55.el5_6.1.s390x.rpm krb5-server-ldap-1.6.1-55.el5_6.1.s390x.rpm krb5-workstation-1.6.1-55.el5_6.1.s390x.rpm x86_64: krb5-debuginfo-1.6.1-55.el5_6.1.i386.rpm krb5-debuginfo-1.6.1-55.el5_6.1.x86_64.rpm krb5-devel-1.6.1-55.el5_6.1.i386.rpm krb5-devel-1.6.1-55.el5_6.1.x86_64.rpm krb5-libs-1.6.1-55.el5_6.1.i386.rpm krb5-libs-1.6.1-55.el5_6.1.x86_64.rpm krb5-server-1.6.1-55.el5_6.1.x86_64.rpm krb5-server-ldap-1.6.1-55.el5_6.1.x86_64.rpm krb5-workstation-1.6.1-55.el5_6.1.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-2011-0281.html https://www.redhat.com/security/data/cve/CVE-2011-0282.html https://access.redhat.com/security/updates/classification/#important http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-002.txt 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2011 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFNUbtwXlSAg2UNWIIRAl+zAJ9KDJCvdD1J3OGmJq03zG4JvGT6cgCbBKnI cFXniSBW0KNU6Bts2a1e2JA= =eu30 - -----END PGP SIGNATURE----- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: krb5 security update Advisory ID: RHSA-2011:0200-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-0200.html Issue date: 2011-02-08 CVE Names: CVE-2010-4022 CVE-2011-0281 CVE-2011-0282 ===================================================================== 1. Summary: Updated krb5 packages that fix three security issues are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having important 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). A NULL pointer dereference flaw was found in the way the MIT Kerberos KDC processed principal names that were not null terminated, when the KDC was configured to use an LDAP back end. A remote attacker could use this flaw to crash the KDC via a specially-crafted request. (CVE-2011-0282) A denial of service flaw was found in the way the MIT Kerberos KDC processed certain principal names when the KDC was configured to use an LDAP back end. A remote attacker could use this flaw to cause the KDC to hang via a specially-crafted request. (CVE-2011-0281) A denial of service flaw was found in the way the MIT Kerberos V5 slave KDC update server (kpropd) processed certain update requests for KDC database propagation. A remote attacker could use this flaw to terminate the kpropd daemon via a specially-crafted update request. (CVE-2010-4022) Red Hat would like to thank the MIT Kerberos Team for reporting the CVE-2011-0282 and CVE-2011-0281 issues. Upstream acknowledges Kevin Longfellow of Oracle Corporation as the original reporter of the CVE-2011-0281 issue. 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 http://kbase.redhat.com/faq/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 664009 - CVE-2010-4022 krb5: kpropd unexpected termination on invalid input (MITKRB5-SA-2011-001) 668719 - CVE-2011-0281 krb5: KDC hang when using LDAP backend caused by special principal name (MITKRB5-SA-2011-002) 668726 - CVE-2011-0282 krb5: KDC crash when using LDAP backend caused by a special principal name (MITKRB5-SA-2011-002) 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/krb5-1.8.2-3.el6_0.4.src.rpm i386: krb5-debuginfo-1.8.2-3.el6_0.4.i686.rpm krb5-libs-1.8.2-3.el6_0.4.i686.rpm krb5-pkinit-openssl-1.8.2-3.el6_0.4.i686.rpm krb5-workstation-1.8.2-3.el6_0.4.i686.rpm x86_64: krb5-debuginfo-1.8.2-3.el6_0.4.i686.rpm krb5-debuginfo-1.8.2-3.el6_0.4.x86_64.rpm krb5-libs-1.8.2-3.el6_0.4.i686.rpm krb5-libs-1.8.2-3.el6_0.4.x86_64.rpm krb5-pkinit-openssl-1.8.2-3.el6_0.4.x86_64.rpm krb5-workstation-1.8.2-3.el6_0.4.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/krb5-1.8.2-3.el6_0.4.src.rpm i386: krb5-debuginfo-1.8.2-3.el6_0.4.i686.rpm krb5-devel-1.8.2-3.el6_0.4.i686.rpm krb5-server-1.8.2-3.el6_0.4.i686.rpm krb5-server-ldap-1.8.2-3.el6_0.4.i686.rpm x86_64: krb5-debuginfo-1.8.2-3.el6_0.4.i686.rpm krb5-debuginfo-1.8.2-3.el6_0.4.x86_64.rpm krb5-devel-1.8.2-3.el6_0.4.i686.rpm krb5-devel-1.8.2-3.el6_0.4.x86_64.rpm krb5-server-1.8.2-3.el6_0.4.x86_64.rpm krb5-server-ldap-1.8.2-3.el6_0.4.i686.rpm krb5-server-ldap-1.8.2-3.el6_0.4.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/krb5-1.8.2-3.el6_0.4.src.rpm x86_64: krb5-debuginfo-1.8.2-3.el6_0.4.i686.rpm krb5-debuginfo-1.8.2-3.el6_0.4.x86_64.rpm krb5-libs-1.8.2-3.el6_0.4.i686.rpm krb5-libs-1.8.2-3.el6_0.4.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/krb5-1.8.2-3.el6_0.4.src.rpm x86_64: krb5-debuginfo-1.8.2-3.el6_0.4.i686.rpm krb5-debuginfo-1.8.2-3.el6_0.4.x86_64.rpm krb5-devel-1.8.2-3.el6_0.4.i686.rpm krb5-devel-1.8.2-3.el6_0.4.x86_64.rpm krb5-pkinit-openssl-1.8.2-3.el6_0.4.x86_64.rpm krb5-server-1.8.2-3.el6_0.4.x86_64.rpm krb5-server-ldap-1.8.2-3.el6_0.4.i686.rpm krb5-server-ldap-1.8.2-3.el6_0.4.x86_64.rpm krb5-workstation-1.8.2-3.el6_0.4.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/krb5-1.8.2-3.el6_0.4.src.rpm i386: krb5-debuginfo-1.8.2-3.el6_0.4.i686.rpm krb5-devel-1.8.2-3.el6_0.4.i686.rpm krb5-libs-1.8.2-3.el6_0.4.i686.rpm krb5-pkinit-openssl-1.8.2-3.el6_0.4.i686.rpm krb5-server-1.8.2-3.el6_0.4.i686.rpm krb5-server-ldap-1.8.2-3.el6_0.4.i686.rpm krb5-workstation-1.8.2-3.el6_0.4.i686.rpm ppc64: krb5-debuginfo-1.8.2-3.el6_0.4.ppc.rpm krb5-debuginfo-1.8.2-3.el6_0.4.ppc64.rpm krb5-devel-1.8.2-3.el6_0.4.ppc.rpm krb5-devel-1.8.2-3.el6_0.4.ppc64.rpm krb5-libs-1.8.2-3.el6_0.4.ppc.rpm krb5-libs-1.8.2-3.el6_0.4.ppc64.rpm krb5-pkinit-openssl-1.8.2-3.el6_0.4.ppc64.rpm krb5-server-1.8.2-3.el6_0.4.ppc64.rpm krb5-server-ldap-1.8.2-3.el6_0.4.ppc.rpm krb5-server-ldap-1.8.2-3.el6_0.4.ppc64.rpm krb5-workstation-1.8.2-3.el6_0.4.ppc64.rpm s390x: krb5-debuginfo-1.8.2-3.el6_0.4.s390.rpm krb5-debuginfo-1.8.2-3.el6_0.4.s390x.rpm krb5-devel-1.8.2-3.el6_0.4.s390.rpm krb5-devel-1.8.2-3.el6_0.4.s390x.rpm krb5-libs-1.8.2-3.el6_0.4.s390.rpm krb5-libs-1.8.2-3.el6_0.4.s390x.rpm krb5-pkinit-openssl-1.8.2-3.el6_0.4.s390x.rpm krb5-server-1.8.2-3.el6_0.4.s390x.rpm krb5-server-ldap-1.8.2-3.el6_0.4.s390.rpm krb5-server-ldap-1.8.2-3.el6_0.4.s390x.rpm krb5-workstation-1.8.2-3.el6_0.4.s390x.rpm x86_64: krb5-debuginfo-1.8.2-3.el6_0.4.i686.rpm krb5-debuginfo-1.8.2-3.el6_0.4.x86_64.rpm krb5-devel-1.8.2-3.el6_0.4.i686.rpm krb5-devel-1.8.2-3.el6_0.4.x86_64.rpm krb5-libs-1.8.2-3.el6_0.4.i686.rpm krb5-libs-1.8.2-3.el6_0.4.x86_64.rpm krb5-pkinit-openssl-1.8.2-3.el6_0.4.x86_64.rpm krb5-server-1.8.2-3.el6_0.4.x86_64.rpm krb5-server-ldap-1.8.2-3.el6_0.4.i686.rpm krb5-server-ldap-1.8.2-3.el6_0.4.x86_64.rpm krb5-workstation-1.8.2-3.el6_0.4.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/krb5-1.8.2-3.el6_0.4.src.rpm i386: krb5-debuginfo-1.8.2-3.el6_0.4.i686.rpm krb5-devel-1.8.2-3.el6_0.4.i686.rpm krb5-libs-1.8.2-3.el6_0.4.i686.rpm krb5-pkinit-openssl-1.8.2-3.el6_0.4.i686.rpm krb5-server-1.8.2-3.el6_0.4.i686.rpm krb5-server-ldap-1.8.2-3.el6_0.4.i686.rpm krb5-workstation-1.8.2-3.el6_0.4.i686.rpm x86_64: krb5-debuginfo-1.8.2-3.el6_0.4.i686.rpm krb5-debuginfo-1.8.2-3.el6_0.4.x86_64.rpm krb5-devel-1.8.2-3.el6_0.4.i686.rpm krb5-devel-1.8.2-3.el6_0.4.x86_64.rpm krb5-libs-1.8.2-3.el6_0.4.i686.rpm krb5-libs-1.8.2-3.el6_0.4.x86_64.rpm krb5-pkinit-openssl-1.8.2-3.el6_0.4.x86_64.rpm krb5-server-1.8.2-3.el6_0.4.x86_64.rpm krb5-server-ldap-1.8.2-3.el6_0.4.i686.rpm krb5-server-ldap-1.8.2-3.el6_0.4.x86_64.rpm krb5-workstation-1.8.2-3.el6_0.4.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-2010-4022.html https://www.redhat.com/security/data/cve/CVE-2011-0281.html https://www.redhat.com/security/data/cve/CVE-2011-0282.html https://access.redhat.com/security/updates/classification/#important http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-001.txt http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-002.txt 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2011 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFNUbvWXlSAg2UNWIIRAkU0AJ9RXk+iEfizvRZgoOd127FjB0OT8QCeONSk Ja3dA5C+cjH1SYA93gg13s8= =yR4Z - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iD8DBQFNUfSj/iFOrG6YcBERAqJMAJ98Hkjba/w/BuVErEjSqeKtbAhteACfZQGW KEkDH1ZaIkb8P1o/thmHPW0= =KXP1 -----END PGP SIGNATURE-----