Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2011.1207 Important: qemu-kvm security update 7 December 2011 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: qemu-kvm Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Red Hat Enterprise Linux WS/Desktop 6 UNIX variants (UNIX, Linux, OSX) Impact/Access: Increased Privileges -- Existing Account Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2011-4111 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2011-1777.html Comment: This advisory references vulnerabilities in products which run on platforms other than Red Hat. It is recommended that administrators running qemu-kvm 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: qemu-kvm security update Advisory ID: RHSA-2011:1777-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-1777.html Issue date: 2011-12-06 CVE Names: CVE-2011-4111 ===================================================================== 1. Summary: Updated qemu-kvm 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) - x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - x86_64 Red Hat Enterprise Linux Workstation (v. 6) - x86_64 3. Description: KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. qemu-kvm is the user-space component for running virtual machines using KVM. A flaw was found in the way qemu-kvm handled VSC_ATR messages when a guest was configured for a CCID (Chip/Smart Card Interface Devices) USB smart card reader in passthrough mode. An attacker able to connect to the port on the host being used for such a device could use this flaw to crash the qemu-kvm process on the host or, possibly, escalate their privileges on the host. (CVE-2011-4111) All users of qemu-kvm should upgrade to these updated packages, which contain a backported patch to resolve this issue. After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again 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/): 751310 - CVE-2011-4111 qemu: ccid: buffer overflow in handling of VSC_ATR message 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/qemu-kvm-0.12.1.2-2.209.el6_2.1.src.rpm x86_64: qemu-img-0.12.1.2-2.209.el6_2.1.x86_64.rpm qemu-kvm-0.12.1.2-2.209.el6_2.1.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.209.el6_2.1.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.209.el6_2.1.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/qemu-kvm-0.12.1.2-2.209.el6_2.1.src.rpm x86_64: qemu-img-0.12.1.2-2.209.el6_2.1.x86_64.rpm qemu-kvm-0.12.1.2-2.209.el6_2.1.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.209.el6_2.1.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.209.el6_2.1.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/qemu-kvm-0.12.1.2-2.209.el6_2.1.src.rpm x86_64: qemu-img-0.12.1.2-2.209.el6_2.1.x86_64.rpm qemu-kvm-0.12.1.2-2.209.el6_2.1.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.209.el6_2.1.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.209.el6_2.1.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/qemu-kvm-0.12.1.2-2.209.el6_2.1.src.rpm x86_64: qemu-img-0.12.1.2-2.209.el6_2.1.x86_64.rpm qemu-kvm-0.12.1.2-2.209.el6_2.1.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.209.el6_2.1.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.209.el6_2.1.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-2011-4111.html https://access.redhat.com/security/updates/classification/#important 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) iD8DBQFO3kJ6XlSAg2UNWIIRArGuAJ46Jwvo8J3xYgcQtKZMiKZSSozN4QCfbeWJ o+mqsSNI9QfEwHmz+UflXzo= =aGYW - -----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 iQIVAwUBTt8LCe4yVqjM2NGpAQLJUw//cWdIok/ajcgiYYeJfEiuWXOwDbM/6Qk7 tiAyc2pFKrZ4Z2cShti+9NVMSGdyyEGM1V2nJDGuVtv2l5ITQut7oELCuZ98WMvC +Six3DqGf1wQ8kb6XA1RS7AE4DBjww7wCllqxrmDels5jVqLuaNJWm1iQW/xXgr9 9JOK3/lqRS35kIt3pywEMFNKa2jvkU4WVQSYNM5ECmTyJ2RXukNW34JgSZkJrnrx HKwx2usCZ1NB1jno30qdr0rW0C/V/tSylYErckZ5NnnHRBFJdJn7ZfoomFLAfP0C qUPj31ouAKqTBr3EpjxCyOihaBdMPpwaHUfXcHCQj2PIxZo6Pl0D1AyU1TAOV6Se XQUh1sxnn9LTcqLrLVTmFF4CfHsMgZ4cfINcXMN62w/nJZDHgx6QKxeuvFBflrHN 5x0GJWq9YBLNWuDzcuw/n/RLJtqzZ5/ldLNAF7cbVvcGpPXg3fSib/iANv/VDdpH H4CW3xA6yqbv3wdDRTQLlKyccVevd3Zx00J4YXopriU2ZJIN30IZHW39n0mglLZv qeoDQWppO13lmOg5aZuey7aLeovL//SWYbk5dx+o07DXh2sHcdJfkzTLpSXWggiJ mZsLvunmetgkHZt9x0C+b/XxBNCqxvzyKOvsPbbaio1EyxBBkeVCuW0r/LvCe25T NEtuAIoNg5Q= =SHKB -----END PGP SIGNATURE-----