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 10 security fixes. Below, we highlight fixes that were contributed by external researchers. Please see the Chrome Security Page for more information.
[$15000][1199345] High CVE-2021-21227: Insufficient data validation in V8. Reported by dmxcsnsbh on 2021-04-15
[$NA][1120238][1175058] High CVE-2021-21232: Use after free in Dev Tools. Reported by asinine on 2020-04-21; also reported by Abdulrahman Alqabandi, Microsoft Browser Vulnerability Research on 2021-02-05
[$TBD][1182937] High CVE-2021-21233: Heap buffer overflow in ANGLE. Reported by Abraruddin Khan and Omair on 2021-02-26
[$5000][1139156] Medium CVE-2021-21228: Insufficient policy enforcement in extensions. Reported by Rob Wu on 2020-10-16
[$5000][1193233] Medium CVE-2021-4324: Insufficient policy enforcement in Google Update. Reported by Abdelhamid Naceri (halov) on 2021-03-28
[$TBD][1198165] Medium CVE-2021-21229: Incorrect security UI in downloads. Reported by Mohit Raj (shadow2639) on 2021-04-12
[$TBD][1198705] Medium CVE-2021-21230: Type Confusion in V8. Reported by Manfred Paul on 2021-04-13
[$NA][1198696] Low CVE-2021-21231: Insufficient data validation in V8. Reported by Sergei Glazunov of Google Project Zero on 2021-04-13
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:
Many of our security bugs are detected using AddressSanitizer, MemorySanitizer, UndefinedBehaviorSanitizer, Control Flow Integrity, libFuzzer, or AFL.
Srinivas Sista
Google Chrome
