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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2011.1110 xen security update 7 November 2011 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: xen Publisher: Debian Operating System: Debian GNU/Linux 6 Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2011-3262 CVE-2011-1898 CVE-2011-1583 CVE-2011-1166 Reference: ESB-2011.0872 ESB-2011.0864 ESB-2011.0519 Original Bulletin: http://www.debian.org/security/2011/dsa-2337 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - ------------------------------------------------------------------------- Debian Security Advisory DSA-2337-1 security@debian.org http://www.debian.org/security/ Thijs Kinkhorst November 6, 2011 http://www.debian.org/security/faq - - ------------------------------------------------------------------------- Package : xen Vulnerability : several vulnerabilities Problem type : local Debian-specific: no CVE ID : CVE-2011-1166 CVE-2011-1583 CVE-2011-1898 CVE-2011-3262 Several vulnerabilities were discovered in the Xen virtual machine hypervisor. CVE-2011-1166 A 64-bit guest can get one of its vCPU'ss into non-kernel mode without first providing a valid non-kernel pagetable, thereby locking up the host system. CVE-2011-1583, CVE-2011-3262 Local users can cause a denial of service and possibly execute arbitrary code via a crafted paravirtualised guest kernel image. CVE-2011-1898 When using PCI passthrough on Intel VT-d chipsets that do not have interrupt remapping, guest OS can users to gain host OS privileges by writing to the interrupt injection registers. The oldstable distribution (lenny) contains a different version of Xen not affected by these problems. For the stable distribution (squeeze), this problem has been fixed in version 4.0.1-4. For the testing (wheezy) and unstable distribution (sid), this problem has been fixed in version 4.1.1-1. We recommend that you upgrade your xen packages. Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: http://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQEcBAEBAgAGBQJOtkMgAAoJEOxfUAG2iX57YfsH/i3q1DpaRYJUKc+HZDWe1dub b2r1XeB/BU7qEHMDHVz74+Htp+//8Pj1nDt58qAskk+bP7l9EQJyu1x97Fiox1lH xFZgMlRfrytpoGNmwA9qDsjmyDihukr2lTiG8xrTXynmqIGYcLJa2p9rCsmyY0YJ 04U9mbW4qzkR7Tcd+XSoyHhQWP93fXX0pf4DqNKvvi5Mj3CqXMUEzy2tQ/SSNQPM Kkj3WwRn7Qf+Ffk/dA9Mg00fv396kuyam+Jf5TiRd1vCy+kJo4ZxxYDdXQf2NRYc y3gFIKYL4DG5sRD+dsEdL6NlxcuWTAq9KnV0ETEZKEXdU2hg1ESJ7KEwsT9hAWg= =vnx3 - -----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 iQIVAwUBTrc+Uu4yVqjM2NGpAQJ/jQ/+P/8Og0+P5jRBMTXxIFhZ0FfjnsExK6+/ cdM/LE8/MPFLYer05keY8HvOVOj1zWb+t0uISJy9t7WxRj6GGreQDoez3N8tcZNG h9376Kx9WkmZXDgq1oFZj4G3S3lhww/ZctEO0/kTw4dnne7jVOrIeERa9MH7jPgd pNkHG01cvM1YnO0iqn0eYGzgvflYcZ/8WLES9300h5wGtnu6ctXgZhobZp36/R/e i5mn5MnhPmgh3PXblNfrZtO6ioD50K6dRxUyRLIKg4VfLvCD8t9FW/LVBmpaU7Qi um5E8kQbPvm3snOO73GL9veMzx0Mwav2xPiqOW9s3GA/ORhnFlQcdRdm8afv89vY NuA8M3fGBnRMzgqZjASUYNpQA0OJzbIypmRI1p5/nE1gJOrZ9UebFeEXouCiWuAK Bxz0yh2EgRO5CyTF4nHe+11TtKKCN2IZCiy63hX06MN3iej+1pditfbGHriL3C3+ 8OkPoCxeUMq62StB0zfnWD7a0N5Kn2aVGoZ+oWQ88BIeZ+JX/LigMMZQr3YIyXqV VXjJmP46wqHBJ74ThuAK5U+YwsUZLKvJ6PE3yUxRWvgdTF0QTzmzMvVetYraw5ot VI1ygACCh3izk0DJpVCYU61sQgz5+AOIbdwHYTFjt0npeq4h7X3OviHeObUApEeG srnAMCQvQTw= =XqrQ -----END PGP SIGNATURE-----