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Gentoo Linux Security Advisory GLSA 200903-19 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: Xerces-C++: Denial of Service |
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Date: March 09, 2009 |
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Bugs: #240496 |
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ID: 200903-19 |
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Synopsis |
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======== |
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|
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An error in Xerces-C++ allows for a Denial of Service via malicious XML |
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schema files. |
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Background |
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========== |
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|
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Xerces-C++ is a validating XML parser written in a portable subset of |
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C++. |
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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/xerces-c < 3.0.0-r1 >= 3.0.0-r1 |
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|
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Description |
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=========== |
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|
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Frank Rast reported that the XML parser in Xerces-C++ does not |
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correctly handle an XML schema definition with a large maxOccurs value, |
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which triggers excessive memory consumption during the validation of an |
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XML file. |
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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 validate |
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an XML file using a specially crafted XML schema file, leading to a |
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Denial of Service (stack consumption and crash). |
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|
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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 Xerces-C++ users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=dev-libs/xerces-c-3.0.0-r1" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2008-4482 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4482 |
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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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|
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http://security.gentoo.org/glsa/glsa-200903-19.xml |
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|
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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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http://bugs.gentoo.org. |
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|
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License |
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======= |
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Copyright 2009 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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|
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http://creativecommons.org/licenses/by-sa/2.5 |
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