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Gentoo Linux Security Advisory GLSA 201009-07 |
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http://security.gentoo.org/ |
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|
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Severity: Normal |
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Title: libxml2: Denial of Service |
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Date: September 21, 2010 |
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Bugs: #280617 |
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ID: 201009-07 |
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|
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Synopsis |
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======== |
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|
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Multiple Denial of Services vulnerabilities were found in libxml2. |
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|
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Background |
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========== |
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|
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libxml2 is a library to manipulate XML files. |
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|
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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 < 2.7.3-r2 >= 2.7.3-r2 |
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|
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Description |
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=========== |
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|
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The following vulnerabilities were reported after a test with the |
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Codenomicon XML fuzzing framework: |
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|
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* Two use-after-free vulnerabilities are possible when parsing a XML |
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file with Notation or Enumeration attribute types (CVE-2009-2416). |
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|
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* A stack consumption vulnerability can be triggered via a large |
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depth of element declarations in a DTD, related to a function |
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recursion (CVE-2009-2414). |
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|
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Impact |
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====== |
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|
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A remote attacker could entice a user or automated system to open a |
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specially crafted XML document with an application using libxml2 |
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resulting in a Denial of Service condition. |
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|
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Workaround |
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========== |
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|
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There is no known workaround at this time. |
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|
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Resolution |
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========== |
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|
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All libxml2 users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=dev-libs/libxml2-2.7.3-r2" |
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|
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NOTE: This is a legacy GLSA. Updates for all affected architectures are |
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available since August 30, 2009. It is likely that your system is |
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already no longer affected by this issue. |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2009-2414 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2414 |
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[ 2 ] CVE-2009-2416 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2416 |
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|
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Availability |
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============ |
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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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|
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http://security.gentoo.org/glsa/glsa-201009-07.xml |
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|
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Concerns? |
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========= |
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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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|
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License |
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======= |
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|
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Copyright 2010 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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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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|
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http://creativecommons.org/licenses/by-sa/2.5 |