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.
[$20000][1138143] High CVE-2021-21149: Stack overflow in Data Transfer. Reported by Ryoya Tsukasaki on 2020-10-14
[$20000][1172192] High CVE-2021-21150: Use after free in Downloads. Reported by Woojin Oh(@pwn_expoit) of STEALIEN on 2021-01-29
[$15000][1165624] High CVE-2021-21151: Use after free in Payments. Reported by Khalil Zhani on 2021-01-12
[$5000][1166504] High CVE-2021-21152: Heap buffer overflow in Media. Reported by Anonymous on 2021-01-14
[$1000][1155974] High CVE-2021-21153: Stack overflow in GPU Process. Reported by Jan Ruge of ERNW GmbH on 2020-12-06
[$TBD][1173269] High CVE-2021-21154: Heap buffer overflow in Tab Strip . Reported by Abdulrahman Alqabandi, Microsoft Browser Vulnerability Research on 2021-02-01
[$TBD][1175500] High CVE-2021-21155: Heap buffer overflow in Tab Strip . Reported by Khalil Zhani on 2021-02-07
[$TBD][1177341] High CVE-2021-21156: Heap buffer overflow in V8. Reported by Sergei Glazunov of Google Project Zero on 2021-02-11
[$TBD][1170657] Medium CVE-2021-21157: Use after free in Web Sockets. Reported by Anonymous on 2021-01-26
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:
Many of our security bugs are detected using AddressSanitizer, MemorySanitizer, UndefinedBehaviorSanitizer, Control Flow Integrity, libFuzzer, or AFL.
