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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2013.0136 Important: mingw32-libxml2 security update 1 February 2013 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: mingw32-libxml2 Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Red Hat Enterprise Linux WS/Desktop 6 Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Denial of Service -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2012-5134 CVE-2012-0841 CVE-2011-3919 CVE-2011-3905 CVE-2011-3102 CVE-2011-2834 CVE-2011-2821 CVE-2011-1944 CVE-2011-0216 CVE-2010-4494 CVE-2010-4008 Reference: ESB-2012.1127 ESB-2012.1123 ESB-2012.0894 ESB-2012.0492 ESB-2012.0217 ESB-2012.0145 ESB-2012.0088 ESB-2012.0053 ESB-2011.0001 ESB-2010.1090 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2013-0217.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: mingw32-libxml2 security update Advisory ID: RHSA-2013:0217-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2013-0217.html Issue date: 2013-01-31 CVE Names: CVE-2010-4008 CVE-2010-4494 CVE-2011-0216 CVE-2011-1944 CVE-2011-2821 CVE-2011-2834 CVE-2011-3102 CVE-2011-3905 CVE-2011-3919 CVE-2012-0841 CVE-2012-5134 ===================================================================== 1. Summary: Updated mingw32-libxml2 packages that fix several security issues are now available for Red Hat Enterprise Linux 6. This advisory also contains information about future updates for the mingw32 packages, as well as the deprecation of the packages with the release of Red Hat Enterprise Linux 6.4. 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 Optional (v. 6) - noarch Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch Red Hat Enterprise Linux Server Optional (v. 6) - noarch Red Hat Enterprise Linux Workstation Optional (v. 6) - noarch 3. Description: These packages provide the libxml2 library, a development toolbox providing the implementation of various XML standards, for users of MinGW (Minimalist GNU for Windows). IMPORTANT NOTE: The mingw32 packages in Red Hat Enterprise Linux 6 will no longer be updated proactively and will be deprecated with the release of Red Hat Enterprise Linux 6.4. These packages were provided to support other capabilities in Red Hat Enterprise Linux and were not intended for direct customer use. Customers are advised to not use these packages with immediate effect. Future updates to these packages will be at Red Hat's discretion and these packages may be removed in a future minor release. A heap-based buffer overflow flaw was found in the way libxml2 decoded entity references with long names. A remote attacker could provide a specially-crafted XML file that, when opened in an application linked against libxml2, would cause the application to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2011-3919) A heap-based buffer underflow flaw was found in the way libxml2 decoded certain entities. A remote attacker could provide a specially-crafted XML file that, when opened in an application linked against libxml2, would cause the application to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2012-5134) It was found that the hashing routine used by libxml2 arrays was susceptible to predictable hash collisions. Sending a specially-crafted message to an XML service could result in longer processing time, which could lead to a denial of service. To mitigate this issue, randomization has been added to the hashing function to reduce the chance of an attacker successfully causing intentional collisions. (CVE-2012-0841) Multiple flaws were found in the way libxml2 parsed certain XPath (XML Path Language) expressions. If an attacker were able to supply a specially-crafted XML file to an application using libxml2, as well as an XPath expression for that application to run against the crafted file, it could cause the application to crash. (CVE-2010-4008, CVE-2010-4494, CVE-2011-2821, CVE-2011-2834) Two heap-based buffer overflow flaws were found in the way libxml2 decoded certain XML files. A remote attacker could provide a specially-crafted XML file that, when opened in an application linked against libxml2, would cause the application to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2011-0216, CVE-2011-3102) An integer overflow flaw, leading to a heap-based buffer overflow, was found in the way libxml2 parsed certain XPath expressions. If an attacker were able to supply a specially-crafted XML file to an application using libxml2, as well as an XPath expression for that application to run against the crafted file, it could cause the application to crash or, possibly, execute arbitrary code. (CVE-2011-1944) An out-of-bounds memory read flaw was found in libxml2. A remote attacker could provide a specially-crafted XML file that, when opened in an application linked against libxml2, would cause the application to crash. (CVE-2011-3905) Red Hat would like to thank the Google Security Team for reporting the CVE-2010-4008 issue. Upstream acknowledges Bui Quang Minh from Bkis as the original reporter of CVE-2010-4008. All users of mingw32-libxml2 are advised to upgrade to these updated packages, which contain backported patches to correct these issues. 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/knowledge/articles/11258 5. Bugs fixed (http://bugzilla.redhat.com/): 645341 - CVE-2010-4008 libxml2: Crash (stack frame overflow or NULL pointer dereference) by traversal of XPath axis 665963 - CVE-2010-4494 libxml2: double-free in XPath processing code 709747 - CVE-2011-1944 libxml, libxml2: Heap-based buffer overflow by adding new namespace node to an existing nodeset or merging nodesets 724906 - CVE-2011-0216 libxml2: Off-by-one error leading to heap-based buffer overflow in encoding 735712 - CVE-2011-2821 libxml2: double free caused by malformed XPath expression in XSLT 735751 - CVE-2011-2834 libxml2: double-free caused by malformed XPath expression in XSLT 767387 - CVE-2011-3905 libxml2 out of bounds read 771896 - CVE-2011-3919 libxml2: Heap-based buffer overflow when decoding an entity reference with a long name 787067 - CVE-2012-0841 libxml2: hash table collisions CPU usage DoS 822109 - CVE-2011-3102 libxml: An off-by-one out-of-bounds write by XPointer part evaluation 880466 - CVE-2012-5134 libxml2: Heap-buffer-underflow in xmlParseAttValueComplex 6. Package List: Red Hat Enterprise Linux Desktop Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/mingw32-libxml2-2.7.6-6.el6_3.src.rpm noarch: mingw32-libxml2-2.7.6-6.el6_3.noarch.rpm mingw32-libxml2-debuginfo-2.7.6-6.el6_3.noarch.rpm mingw32-libxml2-static-2.7.6-6.el6_3.noarch.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/mingw32-libxml2-2.7.6-6.el6_3.src.rpm noarch: mingw32-libxml2-2.7.6-6.el6_3.noarch.rpm mingw32-libxml2-debuginfo-2.7.6-6.el6_3.noarch.rpm mingw32-libxml2-static-2.7.6-6.el6_3.noarch.rpm Red Hat Enterprise Linux Server Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/mingw32-libxml2-2.7.6-6.el6_3.src.rpm noarch: mingw32-libxml2-2.7.6-6.el6_3.noarch.rpm mingw32-libxml2-debuginfo-2.7.6-6.el6_3.noarch.rpm mingw32-libxml2-static-2.7.6-6.el6_3.noarch.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/mingw32-libxml2-2.7.6-6.el6_3.src.rpm noarch: mingw32-libxml2-2.7.6-6.el6_3.noarch.rpm mingw32-libxml2-debuginfo-2.7.6-6.el6_3.noarch.rpm mingw32-libxml2-static-2.7.6-6.el6_3.noarch.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-2010-4008.html https://www.redhat.com/security/data/cve/CVE-2010-4494.html https://www.redhat.com/security/data/cve/CVE-2011-0216.html https://www.redhat.com/security/data/cve/CVE-2011-1944.html https://www.redhat.com/security/data/cve/CVE-2011-2821.html https://www.redhat.com/security/data/cve/CVE-2011-2834.html https://www.redhat.com/security/data/cve/CVE-2011-3102.html https://www.redhat.com/security/data/cve/CVE-2011-3905.html https://www.redhat.com/security/data/cve/CVE-2011-3919.html https://www.redhat.com/security/data/cve/CVE-2012-0841.html https://www.redhat.com/security/data/cve/CVE-2012-5134.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 2013 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFRCujqXlSAg2UNWIIRAq0HAJ41YXDqlCpJkg97YuQmaF2MqKDIpACgn5j7 sLTqWGtUMTYIUvLH8YXGFX4= =rOjB - -----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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