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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2011.0519 Important: xen security update 12 May 2011 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: xen Publisher: Red Hat Operating System: Red Hat Enterprise Linux 5 Impact/Access: Denial of Service -- Existing Account Execute Arbitrary Code/Commands -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2011-1583 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2011-0496.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: xen security update Advisory ID: RHSA-2011:0496-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-0496.html Issue date: 2011-05-09 CVE Names: CVE-2011-1583 ===================================================================== 1. Summary: Updated xen packages that fix several 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. 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: RHEL Desktop Multi OS (v. 5 client) - i386, x86_64 RHEL Virtualization (v. 5 server) - i386, ia64, x86_64 Red Hat Enterprise Linux (v. 5 server) - i386, ia64, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 3. Description: The xen packages contain administration tools and the xend service for managing the kernel-xen kernel for virtualization on Red Hat Enterprise Linux. It was found that the xc_try_bzip2_decode() and xc_try_lzma_decode() decode routines did not correctly check for a possible buffer size overflow in the decoding loop. As well, several integer overflow flaws and missing error/range checking were found that could lead to an infinite loop. A privileged guest user could use these flaws to crash the guest or, possibly, execute arbitrary code in the privileged management domain (Dom0). (CVE-2011-1583) All xen users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted 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/): 696927 - CVE-2011-1583 xen: insufficiencies in pv kernel image validation 6. Package List: Red Hat Enterprise Linux Desktop (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/xen-3.0.3-120.el5_6.2.src.rpm i386: xen-debuginfo-3.0.3-120.el5_6.2.i386.rpm xen-libs-3.0.3-120.el5_6.2.i386.rpm x86_64: xen-debuginfo-3.0.3-120.el5_6.2.i386.rpm xen-debuginfo-3.0.3-120.el5_6.2.x86_64.rpm xen-libs-3.0.3-120.el5_6.2.i386.rpm xen-libs-3.0.3-120.el5_6.2.x86_64.rpm RHEL Desktop Multi OS (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/xen-3.0.3-120.el5_6.2.src.rpm i386: xen-3.0.3-120.el5_6.2.i386.rpm xen-debuginfo-3.0.3-120.el5_6.2.i386.rpm xen-devel-3.0.3-120.el5_6.2.i386.rpm x86_64: xen-3.0.3-120.el5_6.2.x86_64.rpm xen-debuginfo-3.0.3-120.el5_6.2.i386.rpm xen-debuginfo-3.0.3-120.el5_6.2.x86_64.rpm xen-devel-3.0.3-120.el5_6.2.i386.rpm xen-devel-3.0.3-120.el5_6.2.x86_64.rpm Red Hat Enterprise Linux (v. 5 server): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/xen-3.0.3-120.el5_6.2.src.rpm i386: xen-debuginfo-3.0.3-120.el5_6.2.i386.rpm xen-libs-3.0.3-120.el5_6.2.i386.rpm ia64: xen-debuginfo-3.0.3-120.el5_6.2.ia64.rpm xen-libs-3.0.3-120.el5_6.2.ia64.rpm x86_64: xen-debuginfo-3.0.3-120.el5_6.2.i386.rpm xen-debuginfo-3.0.3-120.el5_6.2.x86_64.rpm xen-libs-3.0.3-120.el5_6.2.i386.rpm xen-libs-3.0.3-120.el5_6.2.x86_64.rpm RHEL Virtualization (v. 5 server): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/xen-3.0.3-120.el5_6.2.src.rpm i386: xen-3.0.3-120.el5_6.2.i386.rpm xen-debuginfo-3.0.3-120.el5_6.2.i386.rpm xen-devel-3.0.3-120.el5_6.2.i386.rpm ia64: xen-3.0.3-120.el5_6.2.ia64.rpm xen-debuginfo-3.0.3-120.el5_6.2.ia64.rpm xen-devel-3.0.3-120.el5_6.2.ia64.rpm x86_64: xen-3.0.3-120.el5_6.2.x86_64.rpm xen-debuginfo-3.0.3-120.el5_6.2.i386.rpm xen-debuginfo-3.0.3-120.el5_6.2.x86_64.rpm xen-devel-3.0.3-120.el5_6.2.i386.rpm xen-devel-3.0.3-120.el5_6.2.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-2011-1583.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) iD8DBQFNyA+jXlSAg2UNWIIRAt6QAJ9mabE0BcI5xfVHglu2b30qGXXGnwCdGo39 l0tqwYfwbVoZY/lsmH4RAvY= =YCAR - -----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. 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