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AUSCERT External Security Bulletin Redistribution
Stable Channel Update for Desktop
14 September 2021
AusCERT Security Bulletin Summary
Product: Google Chrome
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Unknown/Unspecified
Denial of Service -- Unknown/Unspecified
Access Confidential Data -- Unknown/Unspecified
Reduced Security -- Unknown/Unspecified
CVE Names: CVE-2021-30633 CVE-2021-30632 CVE-2021-30629
CVE-2021-30628 CVE-2021-30625 CVE-2021-30626
CVE-2021-30627 CVE-2021-30630 CVE-2021-30631
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Release updates from the Chrome team
Stable Channel Update for Desktop
Monday, September 13, 2021
The Stable channel has been updated to 93.0.4577.82 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. Interested in
switching release channels? Find out how here. 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.
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 11 security fixes. Below, we highlight fixes that were
contributed by external researchers. Please see the Chrome Security Page for
[$7500] High CVE-2021-30625: Use after free in Selection API. Reported
by Marcin Towalski of Cisco Talos on 2021-08-06
[$7500] High CVE-2021-30626: Out of bounds memory access in ANGLE.
Reported by Jeonghoon Shin of Theori on 2021-08-18
[$5000] High CVE-2021-30627: Type Confusion in Blink layout. Reported
by Aki Helin of OUSPG on 2021-09-01
[$TBD] High CVE-2021-30628: Stack buffer overflow in ANGLE. Reported
by Jaehun Jeong(@n3sk) of Theori on 2021-08-18
[$TBD] High CVE-2021-30629: Use after free in Permissions. Reported by
Weipeng Jiang (@Krace) from Codesafe Team of Legendsec at Qi'anxin Group on
[$TBD] High CVE-2021-30630: Inappropriate implementation in Blink .
Reported by SorryMybad (@S0rryMybad) of Kunlun Lab on 2021-08-30
[$TBD] High CVE-2021-30631: Type Confusion in Blink layout. Reported
by Atte Kettunen of OUSPG on 2021-09-06
[$TBD] High CVE-2021-30632: Out of bounds write in V8. Reported by
Anonymous on 2021-09-08
[$TBD] High CVE-2021-30633: Use after free in Indexed DB API. Reported
by Anonymous on 2021-09-08
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
Google is aware that exploits for CVE-2021-30632 and CVE-2021-30633 exist in
As usual, our ongoing internal security work was responsible for a wide range
 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.
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