Stable Channel Update for Desktop

The Chrome team is delighted to announce the promotion of Chrome 55 to the stable channel for Windows, Mac and Linux. This will roll out over the coming days/weeks.

Chrome 55.0.2883.75 contains a number of fixes and improvements – a list of changes is available in the log. Watch out for upcoming Chrome and Chromium blog posts about new features and big efforts delivered in 55.

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 36 security fixes. Below, we highlight fixes that were contributed by external researchers. Please see the Chrome Security Page for more information.

[$N/A][664411] High CVE-2016-9651: Private property access in V8. Credit to Guang Gong of Alpha Team Of Qihoo 360 reported through Pwnfest

[$7500][658535] High CVE-2016-5208: Universal XSS in Blink. Credit to Mariusz Mlynski

[$7500][655904] High CVE-2016-5207: Universal XSS in Blink. Credit to Mariusz Mlynski

[$7500][653749] High CVE-2016-5206: Same-origin bypass in PDFium. Credit to Rob Wu (robwu.nl)

[$7500][646610] High CVE-2016-5205: Universal XSS in Blink. Credit to Anonymous

[$7500][630870] High CVE-2016-5204: Universal XSS in Blink. Credit to Mariusz Mlynski

[$5000][664139] High CVE-2016-5209: Out of bounds write in Blink. Credit to Giwan Go of STEALIEN

[$3000][644219] High CVE-2016-5203: Use after free in PDFium. Credit to Anonymous

[$3500][654183] High CVE-2016-5210: Out of bounds write in PDFium. Credit to Ke Liu of Tencent’s Xuanwu LAB

[$3000][653134] High CVE-2016-5212: Local file disclosure in DevTools. Credit to Khalil Zhani

[$3000][649229] High CVE-2016-5211: Use after free in PDFium. Credit to Anonymous

[$500][652548] High CVE-2016-5213: Use after free in V8. Credit to Khalil Zhani

[$N/A][601538] Medium CVE-2016-5214: File download protection bypass. Credit to Jonathan Birch and MSVR

[$3000][653090] Medium CVE-2016-5216: Use after free in PDFium. Credit to Anonymous

[$3000][619463] Medium CVE-2016-5215: Use after free in Webaudio. Credit to Looben Yang

[$2500][654280] Medium CVE-2016-5217: Use of unvalidated data in PDFium. Credit to Rob Wu (robwu.nl)

[$2000][660498] Medium CVE-2016-5218: Address spoofing in Omnibox. Credit to Abdulrahman Alqabandi (@qab)

[$1500][657568] Medium CVE-2016-5219: Use after free in V8. Credit to Rob Wu (robwu.nl)

[$1000][660854] Medium CVE-2016-5221: Integer overflow in ANGLE. Credit to Tim Becker of ForAllSecure

[$1000][654279] Medium CVE-2016-5220: Local file access in PDFium. Credit to Rob Wu (robwu.nl)

[$500][657720] Medium CVE-2016-5222: Address spoofing in Omnibox. Credit to xisigr of Tencent’s Xuanwu Lab

[$N/A][653034] Low CVE-2016-9650: CSP Referrer disclosure. Credit to Jakub Żoczek

[$N/A][652038] Low CVE-2016-5223: Integer overflow in PDFium. Credit to Hwiwon Lee
[$N/A][639750] Low CVE-2016-5226: Limited XSS in Blink. Credit to Jun Kokatsu (@shhnjk)

[$N/A][630332] Low CVE-2016-5225: CSP bypass in Blink. Credit to Scott Helme (@Scott_Helme, scotthelme.co.uk)

[$N/A][615851] Low CVE-2016-5224: Same-origin bypass in SVG. Credit to Roeland Krak

We would also like to thank all security researchers that worked with us during the development cycle to prevent security bugs from ever reaching the stable channel.

As usual, our ongoing internal security work was responsible for a wide range of fixes:

• [669928] CVE-2016-9652: Various fixes from internal audits, fuzzing and other initiatives

Many of our security bugs are detected using AddressSanitizer, MemorySanitizer, Control Flow Integrity, or libFuzzer.

Interested in switching release channels? Find out how. If you find a new issue, please let us know by filing a bug. The community help forum is also a great place to reach out for help or learn about common issues.

Krishna Govind

Google Chrome