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AUSCERT External Security Bulletin Redistribution
Google Chrome Stable Channel Update for Desktop
4 August 2021
AusCERT Security Bulletin Summary
Product: Google Chrome
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Provide Misleading Information -- Remote with User Interaction
Access Confidential Data -- Remote with User Interaction
CVE Names: CVE-2021-30597 CVE-2021-30596 CVE-2021-30594
CVE-2021-30593 CVE-2021-30592 CVE-2021-30591
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Stable Channel Update for Desktop
Monday, August 2, 2021
The Stable channel has been updated to 92.0.4515.131 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 10 security fixes. Below, we highlight fixes that were
contributed by external researchers. Please see the Chrome Security Page for
[$20000] High CVE-2021-30590: Heap buffer overflow in Bookmarks.
Reported by Leecraso and Guang Gong of 360 Alpha Lab on 2021-07-09
[$20000] High CVE-2021-30591: Use after free in File System API.
Reported by SorryMybad (@S0rryMybad) of Kunlun Lab on 2021-07-14
[$10000] High CVE-2021-30592: Out of bounds write in Tab Groups.
Reported by David Erceg on 2021-05-15
[$5000] High CVE-2021-30593: Out of bounds read in Tab Strip. Reported
by David Erceg on 2021-05-16
[$N/A] High CVE-2021-30594: Use after free in Page Info UI. Reported
by raven (@raid_akame) on 2021-06-10
[$1000] Medium CVE-2021-30596: Incorrect security UI in Navigation.
Reported by Mohit Raj (shadow2639) on 2021-05-29
[$TBD] Medium CVE-2021-30597: Use after free in Browser UI. Reported
by raven (@raid_akame) on 2021-07-24
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
As usual, our ongoing internal security work was responsible for a wide range
o  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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