Wednesday, December 4, 2013

Stable Channel Update

Chrome has been updated to 31.0.1650.63 for Windows, Mac, Linux and Chrome Frame.

Security Fixes and Rewards


Note: Access to bug details and links may be kept restricted until a majority of users are updated with a fix. We will also retain restrictions if the bug exists in a third party library that other projects similarly depend on, but haven’t yet fixed.


This update includes 15 security fixes. Below, we highlight fixes that were either contributed by external researchers or are particularly interesting. Please see the Chromium security page for more information.


[$1337][307159] Medium CVE-2013-6634: Session fixation in sync related to 302 redirects. Credit to Andrey Labunets.
[$2000][314469] High CVE-2013-6635: Use-after-free in editing. Credit to cloudfuzzer.
[$500][322959] Medium CVE-2013-6636: Address bar spoofing related to modal dialogs. Credit to Bas Venis.


We would also like to thank cloudfuzzer for working with us during the development cycle to prevent security bugs from ever reaching the stable channel. $2500 in additional rewards were issued.


As usual, our ongoing internal security work responsible for a wide range of fixes:
  • [325501] CVE-2013-6637: Various fixes from internal audits, fuzzing and other initiatives.
  • [319722] Medium CVE-2013-6638: Buffer overflow in v8. This issue was fixed in v8 version 3.22.24.7. Credit to Jakob Kummerow of the Chromium project.
  • [319835] High CVE-2013-6639: Out of bounds write in v8. This issue was fixed in v8 version 3.22.24.7. Credit to Jakob Kummerow of the Chromium project.
  • [319860] Medium CVE-2013-6640: Out of bounds read in v8. This issue was fixed in v8 version 3.22.24.7. Credit to Jakob Kummerow of the Chromium project.

Many of the above bugs were detected using AddressSanitizer.


A full list of changes is available in the SVN log. Interested in switching release channels? Find out how. If you find a new issue, please let us know by filing a bug.

Anthony Laforge
Google Chrome

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