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RHSA-2012:1482: firefox security update

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RHSA-2012:1482: firefox security update



Mozilla Firefox is an open source web browser. XULRunner provides theXUL Runtime environment for Mozilla Firefox.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-2012-4214, CVE-2012-4215, CVE-2012-4216, CVE-2012-5829,CVE-2012-5830, CVE-2012-5833, CVE-2012-5835, CVE-2012-5839, CVE-2012-5840,CVE-2012-5842)A buffer overflow flaw was found in the way Firefox handled GIF (GraphicsInterchange Format) images. A web page containing a malicious GIF imagecould cause Firefox to crash or, possibly, execute arbitrary code with theprivileges of the user running Firefox. (CVE-2012-4202)A flaw was found in the way the Style Inspector tool in Firefox handledcertain Cascading Style Sheets (CSS). Running the tool (Tools -> WebDeveloper -> Inspect) on malicious CSS could result in the execution ofHTML and CSS content with chrome privileges. (CVE-2012-4210)A flaw was found in the way Firefox decoded the HZ-GB-2312 characterencoding. A web page containing malicious content could cause Firefox torun JavaScript code with the permissions of a different website.(CVE-2012-4207)A flaw was found in the location object implementation in Firefox.Malicious content could possibly use this flaw to allow restricted contentto be loaded by plug-ins. (CVE-2012-4209)A flaw was found in the way cross-origin wrappers were implemented.Malicious content could use this flaw to perform cross-site scriptingattacks. (CVE-2012-5841)A flaw was found in the evalInSandbox implementation in Firefox. Maliciouscontent could use this flaw to perform cross-site scripting attacks.(CVE-2012-4201)For technical details regarding these flaws, refer to the Mozilla securityadvisories for Firefox 10.0.11 ESR. You can find a link to the Mozillaadvisories in the References section of this erratum.Red Hat would like to thank the Mozilla project for reporting these issues.Upstream acknowledges Abhishek Arya, miaubiz, Jesse Ruderman, AndrewMcCreight, Bob Clary, Kyle Huey, Atte Kettunen, Mariusz Mlynski, MasatoKinugawa, Bobby Holley, and moz_bug_r_a4 as the original reporters of theseissues.All Firefox users should upgrade to these updated packages, which containFirefox version 10.0.11 ESR, which corrects these issues. After installingthe update, 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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