| <?xml version="1.0" encoding="UTF-8"?> |
| <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> |
| <glsa id="201202-09"> |
| <title>libxml2: User-assisted execution of arbitrary code</title> |
| <synopsis>A boundary error in libxml2 could result in execution of arbitrary |
| code or Denial of Service. |
| </synopsis> |
| <product type="ebuild">libxml2</product> |
| <announced>February 29, 2012</announced> |
| <revised>February 29, 2012: 2</revised> |
| <bug>398361</bug> |
| <access>remote</access> |
| <affected> |
| <package name="dev-libs/libxml2" auto="yes" arch="*"> |
| <unaffected range="ge">2.7.8-r4</unaffected> |
| <vulnerable range="lt">2.7.8-r4</vulnerable> |
| </package> |
| </affected> |
| <background> |
| <p>libxml2 is the XML C parser and toolkit developed for the Gnome project.</p> |
| </background> |
| <description> |
| <p>The "xmlStringLenDecodeEntities()" function in parser.c contains a |
| boundary error which could possibly cause a heap-based buffer overflow. |
| </p> |
| </description> |
| <impact type="normal"> |
| <p>A remote attacker could entice a user to open a specially crafted XML |
| file in an application linked against libxml2, possibly resulting in the |
| remote execution of arbitrary code with the permissions of the user |
| running the application, or Denial of Service. |
| </p> |
| </impact> |
| <workaround> |
| <p>There is no known workaround at this time.</p> |
| </workaround> |
| <resolution> |
| <p>All libxml2 users should upgrade to the latest version:</p> |
| |
| <code> |
| # emerge --sync |
| # emerge --ask --oneshot --verbose ">=dev-libs/libxml2-2.7.8-r4" |
| </code> |
| |
| <p>Packages which depend on this library may need to be recompiled. Tools |
| such as revdep-rebuild may assist in identifying some of these packages. |
| </p> |
| </resolution> |
| <references> |
| <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3919">CVE-2011-3919</uri> |
| </references> |
| <metadata timestamp="Mon, 16 Jan 2012 09:34:21 +0000" tag="requester">ago</metadata> |
| <metadata timestamp="Wed, 29 Feb 2012 20:10:19 +0000" tag="submitter">ackle</metadata> |
| </glsa> |