Stable Channel Update for Desktop

The Chrome team is delighted to announce the promotion of Chrome 63 to the stable channel for Windows, Mac and Linux. This will roll out over the coming days/weeks.

Chrome 63.0.3239.84 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 63.

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

[$10500][778505] Critical CVE-2017-15407: Out of bounds write in QUIC. Reported by Ned Williamson on 2017-10-26

[$6337][762374] High CVE-2017-15408: Heap buffer overflow in PDFium. Reported by Ke Liu of Tencent’s Xuanwu LAB on 2017-09-06

[$5000][763972] High CVE-2017-15409: Out of bounds write in Skia. Reported by Anonymous on 2017-09-11

[$5000][765921] High CVE-2017-15410: Use after free in PDFium. Reported by Luật Nguyễn (@l4wio) of KeenLab, Tencent on 2017-09-16

[$5000][770148] High CVE-2017-15411: Use after free in PDFium. Reported by Luật Nguyễn (@l4wio) of KeenLab, Tencent on 2017-09-29

[$3500][727039] High CVE-2017-15412: Use after free in libXML. Reported by Nick Wellnhofer on 2017-05-27

[$500][766666] High CVE-2017-15413: Type confusion in WebAssembly. Reported by Gaurav Dewan(@007gauravdewan) of Adobe Systems India Pvt. Ltd. on 2017-09-19

[$3337][765512] Medium CVE-2017-15415: Pointer information disclosure in IPC call. Reported by Viktor Brange of Microsoft Offensive Security Research Team on 2017-09-15

[$2500][779314] Medium CVE-2017-15416: Out of bounds read in Blink. Reported by Ned Williamson on 2017-10-28

[$2000][699028] Medium CVE-2017-15417: Cross origin information disclosure in Skia . Reported by Max May on 2017-03-07

[$1000][765858] Medium CVE-2017-15418: Use of uninitialized value in Skia. Reported by Kushal Arvind Shah of Fortinet’s FortiGuard Labs on 2017-09-15

[$1000][780312] Medium CVE-2017-15419: Cross origin leak of redirect URL in Blink. Reported by Jun Kokatsu (@shhnjk) on 2017-10-31

[$500][777419] Medium CVE-2017-15420: URL spoofing in Omnibox. Reported by WenXu Wu of Tencent’s Xuanwu Lab on 2017-10-23

[$TBD][774382] Medium CVE-2017-15422: Integer overflow in ICU. Reported by Yuan Deng of Ant-financial Light-Year Security Lab on 2017-10-13
[$500][780484] Medium** **CVE-2017-15430: Unsafe navigation in Chromecast Plugin. Reported by jinmo123 on 11/1/2017

[$500][778101] Low CVE-2017-15423: Issue with SPAKE implementation in BoringSSL. Reported by Greg Hudson on 2017-10-25

[$N/A][756226] Low CVE-2017-15424: URL Spoof in Omnibox. Reported by Khalil Zhani on 2017-08-16

[$N/A][756456] Low CVE-2017-15425: URL Spoof in Omnibox. Reported by xisigr of Tencent’s Xuanwu Lab on 2017-08-17

[$N/A][756735] Low CVE-2017-15426: URL Spoof in Omnibox. Reported by WenXu Wu of Tencent’s Xuanwu Lab on 2017-08-18

[$N/A][768910] Low CVE-2017-15427: Insufficient blocking of JavaScript in Omnibox. Reported by Junaid Farhan (fb.me/junaid.farhan.54) on 2017-09-26

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:

• [792099] Various fixes from internal audits, fuzzing and other initiatives

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

A list of all changes is available in the log.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