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What's New

The Stable channel has been updated to 117.0.5938.92 for Windows, Mac and Linux, which will roll out over the coming days/weeks. A full list of changes in this build is available in the log.

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

  • [$NA][1479274] Critical CVE-2023-4863: Heap buffer overflow in WebP. Reported by Apple Security Engineering and Architecture (SEAR) and The Citizen Lab at The University of Toronto Munk School on 2023-09-06
  • [$3000][1430867] Medium CVE-2023-4900: Inappropriate implementation in Custom Tabs. Reported by Levit Nudi from Kenya on 2023-04-06
  • [$3000][1459281] Medium CVE-2023-4901: Inappropriate implementation in Prompts. Reported by Kang Ali on 2023-06-29
  • [$2000][1454515] Medium CVE-2023-4902: Inappropriate implementation in Input. Reported by Axel Chong on 2023-06-14
  • [$1000][1446709] Medium CVE-2023-4903: Inappropriate implementation in Custom Mobile Tabs. Reported by Ahmed ElMasry on 2023-05-18
  • [$1000][1453501] Medium CVE-2023-4904: Insufficient policy enforcement in Downloads. Reported by Tudor Enache @tudorhacks on 2023-06-09
  • [$500][1441228] Medium CVE-2023-4905: Inappropriate implementation in Prompts. Reported by Hafiizh on 2023-04-29
  • [$6000][1449874] Low CVE-2023-4906: Insufficient policy enforcement in Autofill. Reported by Ahmed ElMasry on 2023-05-30
  • [$2000][1462104] Low CVE-2023-4907: Inappropriate implementation in Intents. Reported by Mohit Raj (shadow2639) on 2023-07-04
  • [$TBD][1451543] Low CVE-2023-4908: Inappropriate implementation in Picture in Picture. Reported by Axel Chong on 2023-06-06
  • [$TBD][1463293] Low CVE-2023-4909: Inappropriate implementation in Interstitials. Reported by Axel Chong on 2023-07-09

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.

Google is aware that an exploit for CVE-2023-4863 exists in the wild.

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

  • [1481336] 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.