Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2011.0868 Moderate: libvirt security and bug fix update 24 August 2011 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: libvirt 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-2011-2511 Reference: ESB-2011.0757 ESB-2011.0742 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2011-1197.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: libvirt security and bug fix update Advisory ID: RHSA-2011:1197-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-1197.html Issue date: 2011-08-23 CVE Names: CVE-2011-2511 ===================================================================== 1. Summary: Updated libvirt packages that fix one security issue and several bugs are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate 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: The libvirt library is a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. In addition, libvirt provides tools for remotely managing virtualized systems. An integer overflow flaw was found in libvirtd's RPC call handling. An attacker able to establish read-only connections to libvirtd could trigger this flaw by calling virDomainGetVcpus() with specially-crafted parameters, causing libvirtd to crash. (CVE-2011-2511) This update also fixes the following bugs: * Previously, when the "virsh vol-create-from" command was run on an LVM (Logical Volume Manager) storage pool, performance of the command was very low and the operation consumed an excessive amount of time. This bug has been fixed in the virStorageVolCreateXMLFrom() function, and the performance problem of the command no longer occurs. * Due to a regression, libvirt used undocumented command line options, instead of the recommended ones. Consequently, the qemu-img utility used an invalid argument while creating an encrypted volume, and the process eventually failed. With this update, the bug in the backing format of the storage back end has been fixed, and encrypted volumes can now be created as expected. (BZ#726617) * Due to a bug in the qemuAuditDisk() function, hot unplug failures were never audited, and a hot unplug success was audited as a failure. This bug has been fixed, and auditing of disk hot unplug operations now works as expected. (BZ#728516) * Previously, when a debug process was being activated, the act of preparing a debug message ended up with dereferencing a UUID (universally unique identifier) prior to the NULL argument check. Consequently, an API running the debug process sometimes terminated with a segmentation fault. With this update, a patch has been provided to address this issue, and the crashes no longer occur in the described scenario. (BZ#728546) * The libvirt library uses the "boot=on" option to mark which disk is bootable but it only uses that option if Qemu advertises its support. The qemu-kvm utility in Red Hat Enterprise Linux 6.1 removed support for that option and libvirt could not use it. As a consequence, when an IDE disk was added as the second storage with a virtio disk being set up as the first one by default, the operating system tried to boot from the IDE disk rather than the virtio disk and either failed to boot with the "No bootable disk" error message returned, or the system booted whatever operating system was on the IDE disk. With this update, the boot configuration is translated into bootindex, which provides control over which device is used for booting a guest operating system, thus fixing this bug. All users of libvirt are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, libvirtd must be restarted ("service libvirtd restart") for this update to take effect. 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/kb/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 717199 - CVE-2011-2511 libvirt: integer overflow in VirDomainGetVcpus 726617 - libvirt regression with creating encrypted volume 728516 - Auditing of QEMU driver disk hotunplug events logs is missing and/or incorrect 728546 - [libvirt] [logs] null dereference while preparing libvirt logs 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/libvirt-0.8.7-18.el6_1.1.src.rpm i386: libvirt-0.8.7-18.el6_1.1.i686.rpm libvirt-client-0.8.7-18.el6_1.1.i686.rpm libvirt-debuginfo-0.8.7-18.el6_1.1.i686.rpm libvirt-python-0.8.7-18.el6_1.1.i686.rpm x86_64: libvirt-0.8.7-18.el6_1.1.x86_64.rpm libvirt-client-0.8.7-18.el6_1.1.i686.rpm libvirt-client-0.8.7-18.el6_1.1.x86_64.rpm libvirt-debuginfo-0.8.7-18.el6_1.1.i686.rpm libvirt-debuginfo-0.8.7-18.el6_1.1.x86_64.rpm libvirt-python-0.8.7-18.el6_1.1.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/libvirt-0.8.7-18.el6_1.1.src.rpm i386: libvirt-debuginfo-0.8.7-18.el6_1.1.i686.rpm libvirt-devel-0.8.7-18.el6_1.1.i686.rpm x86_64: libvirt-debuginfo-0.8.7-18.el6_1.1.i686.rpm libvirt-debuginfo-0.8.7-18.el6_1.1.x86_64.rpm libvirt-devel-0.8.7-18.el6_1.1.i686.rpm libvirt-devel-0.8.7-18.el6_1.1.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/libvirt-0.8.7-18.el6_1.1.src.rpm x86_64: libvirt-0.8.7-18.el6_1.1.x86_64.rpm libvirt-client-0.8.7-18.el6_1.1.i686.rpm libvirt-client-0.8.7-18.el6_1.1.x86_64.rpm libvirt-debuginfo-0.8.7-18.el6_1.1.i686.rpm libvirt-debuginfo-0.8.7-18.el6_1.1.x86_64.rpm libvirt-python-0.8.7-18.el6_1.1.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/libvirt-0.8.7-18.el6_1.1.src.rpm x86_64: libvirt-debuginfo-0.8.7-18.el6_1.1.i686.rpm libvirt-debuginfo-0.8.7-18.el6_1.1.x86_64.rpm libvirt-devel-0.8.7-18.el6_1.1.i686.rpm libvirt-devel-0.8.7-18.el6_1.1.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/libvirt-0.8.7-18.el6_1.1.src.rpm i386: libvirt-0.8.7-18.el6_1.1.i686.rpm libvirt-client-0.8.7-18.el6_1.1.i686.rpm libvirt-debuginfo-0.8.7-18.el6_1.1.i686.rpm libvirt-devel-0.8.7-18.el6_1.1.i686.rpm libvirt-python-0.8.7-18.el6_1.1.i686.rpm ppc64: libvirt-0.8.7-18.el6_1.1.ppc64.rpm libvirt-client-0.8.7-18.el6_1.1.ppc.rpm libvirt-client-0.8.7-18.el6_1.1.ppc64.rpm libvirt-debuginfo-0.8.7-18.el6_1.1.ppc.rpm libvirt-debuginfo-0.8.7-18.el6_1.1.ppc64.rpm libvirt-devel-0.8.7-18.el6_1.1.ppc.rpm libvirt-devel-0.8.7-18.el6_1.1.ppc64.rpm libvirt-python-0.8.7-18.el6_1.1.ppc64.rpm s390x: libvirt-0.8.7-18.el6_1.1.s390x.rpm libvirt-client-0.8.7-18.el6_1.1.s390.rpm libvirt-client-0.8.7-18.el6_1.1.s390x.rpm libvirt-debuginfo-0.8.7-18.el6_1.1.s390.rpm libvirt-debuginfo-0.8.7-18.el6_1.1.s390x.rpm libvirt-devel-0.8.7-18.el6_1.1.s390.rpm libvirt-devel-0.8.7-18.el6_1.1.s390x.rpm libvirt-python-0.8.7-18.el6_1.1.s390x.rpm x86_64: libvirt-0.8.7-18.el6_1.1.x86_64.rpm libvirt-client-0.8.7-18.el6_1.1.i686.rpm libvirt-client-0.8.7-18.el6_1.1.x86_64.rpm libvirt-debuginfo-0.8.7-18.el6_1.1.i686.rpm libvirt-debuginfo-0.8.7-18.el6_1.1.x86_64.rpm libvirt-devel-0.8.7-18.el6_1.1.i686.rpm libvirt-devel-0.8.7-18.el6_1.1.x86_64.rpm libvirt-python-0.8.7-18.el6_1.1.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/libvirt-0.8.7-18.el6_1.1.src.rpm i386: libvirt-0.8.7-18.el6_1.1.i686.rpm libvirt-client-0.8.7-18.el6_1.1.i686.rpm libvirt-debuginfo-0.8.7-18.el6_1.1.i686.rpm libvirt-devel-0.8.7-18.el6_1.1.i686.rpm libvirt-python-0.8.7-18.el6_1.1.i686.rpm x86_64: libvirt-0.8.7-18.el6_1.1.x86_64.rpm libvirt-client-0.8.7-18.el6_1.1.i686.rpm libvirt-client-0.8.7-18.el6_1.1.x86_64.rpm libvirt-debuginfo-0.8.7-18.el6_1.1.i686.rpm libvirt-debuginfo-0.8.7-18.el6_1.1.x86_64.rpm libvirt-devel-0.8.7-18.el6_1.1.i686.rpm libvirt-devel-0.8.7-18.el6_1.1.x86_64.rpm libvirt-python-0.8.7-18.el6_1.1.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-2011-2511.html https://access.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2011 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD4DBQFOU730XlSAg2UNWIIRAsorAJiH2nLKrFKzE6Nipl948A/sMkwQAJ4sME1x aG3oAPAIDOjm2bf+/TwzdA== =zho7 - -----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. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. 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 iQIVAwUBTlRYn+4yVqjM2NGpAQJTBw//cB57jLchAS8y2OU9zZc3+Z/az85HrihO VKX6RUXVAm2P6JXxIaBRCNXgYYa2kfr1I5kQ88zu7+z76IgkZmKwIjlG3E4Hw8YQ QRp/mV7+tudHjD/2DTjzPGmSLlKdh1R8LxhCUKW5UURZaC2aLB4NShRkMI/ai/sM ZzrHXBLqATkClIF7oGrlQ/lRPSBXDVvTw0+xyYdDB48mMqK1QLAEtAe8LaYC0pR2 etUR2pH9+f5XoT3McUqyllMKph/UB/c2UJj+SJnls55lRNrLysKB+w+T8kNBV59J r9OnmLkBLMm1Yay3CDo4Nc98wXKFYwYgaIAu9NkOMhOv91rD41aW6qjrUMem+7PO F8RdUP+KO4au8vT1ld1XKBDov6XnRqU8R+UvwvfbKBfMgpFfr+XE3ElfyRE21+sw hvMdezfZvOfJJHgKbStDgkYo2tJFcA30a7/echL4GrY7LIazLGDixKSfyIiIrnZC /u/Jtt6oieNhOs9mT6g+hPa69hAHSFP8rruHUeKQPjFz/uW+Zv66JwOgo1qn6nEf hgwp/3Qs8ox8HdTjAPQS5uSdlIrzcH91UzEX2xxaHG6tmarduiC/UjtGWyqJshr8 jo+g75wKJmZMzYLYRwri9kI2g9TJcrN4dWO9P/I5Mixx20cwZS0+nW7KdfUJS0Zm +6nnquINqqs= =zRnm -----END PGP SIGNATURE-----