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Gentoo Linux Security Advisory GLSA 201202-09 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: libxml2: User-assisted execution of arbitrary code |
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Date: February 29, 2012 |
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Bugs: #398361 |
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ID: 201202-09 |
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Synopsis |
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======== |
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|
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A boundary error in libxml2 could result in execution of arbitrary code |
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or Denial of Service. |
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Background |
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========== |
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|
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libxml2 is the XML C parser and toolkit developed for the Gnome |
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project. |
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 dev-libs/libxml2 < 2.7.8-r4 >= 2.7.8-r4 |
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Description |
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=========== |
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|
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The "xmlStringLenDecodeEntities()" function in parser.c contains a |
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boundary error which could possibly cause a heap-based buffer overflow. |
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Impact |
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====== |
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|
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A remote attacker could entice a user to open a specially crafted XML |
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file in an application linked against libxml2, possibly resulting in |
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the remote execution of arbitrary code with the permissions of the user |
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running the application, or Denial of Service. |
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All libxml2 users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=dev-libs/libxml2-2.7.8-r4" |
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Packages which depend on this library may need to be recompiled. Tools |
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such as revdep-rebuild may assist in identifying some of these |
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packages. |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2011-3919 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3919 |
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|
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-201202-09.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users' machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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https://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2012 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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http://creativecommons.org/licenses/by-sa/2.5 |
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