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RHSA-2012:0079: firefox security update

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RHSA-2012:0079: firefox security update



Mozilla Firefox is an open source web browser. XULRunner provides the XULRuntime environment for Mozilla Firefox.A use-after-free flaw was found in the way Firefox removed nsDOMAttributechild nodes. In certain circumstances, due to the premature notificationof AttributeChildRemoved, a malicious script could possibly use this flawto cause Firefox to crash or, potentially, execute arbitrary code with theprivileges of the user running Firefox. (CVE-2011-3659)Several flaws were found in the processing of malformed web content. A webpage containing malicious content could cause Firefox to crash or,potentially, execute arbitrary code with the privileges of the user runningFirefox. (CVE-2012-0442)A flaw was found in the way Firefox parsed Ogg Vorbis media files. A webpage containing a malicious Ogg Vorbis media file could cause Firefox tocrash or, potentially, execute arbitrary code with the privileges of theuser running Firefox. (CVE-2012-0444)A flaw was found in the way Firefox parsed certain Scalable Vector Graphics(SVG) image files that contained eXtensible Style Sheet LanguageTransformations (XSLT). A web page containing a malicious SVG image filecould cause Firefox to crash or, potentially, execute arbitrary code withthe privileges of the user running Firefox. (CVE-2012-0449)The same-origin policy in Firefox treated http://example.com andhttp://[example.com] as interchangeable. A malicious script could possiblyuse this flaw to gain access to sensitive information (such as a client'sIP and user e-mail address, or httpOnly cookies) that may be included inHTTP proxy error replies, generated in response to invalid URLs usingsquare brackets. (CVE-2011-3670)For technical details regarding these flaws, refer to the Mozilla securityadvisories for Firefox 3.6.26. You can find a link to the Mozillaadvisories in the References section of this erratum.All Firefox users should upgrade to these updated packages, which containFirefox version 3.6.26, which corrects these issues. After installing theupdate, Firefox must be restarted for the changes to take effect.


  • redhat-upgrade-firefox
  • redhat-upgrade-firefox-debuginfo
  • redhat-upgrade-xulrunner
  • redhat-upgrade-xulrunner-debuginfo
  • redhat-upgrade-xulrunner-devel

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