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             AUSCERT External Security Bulletin Redistribution

                    Google Chrome Stable Channel Update
                               15 March 2021


        AusCERT Security Bulletin Summary

Product:           Google Chrome
Publisher:         Google
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-21193 CVE-2021-21192 CVE-2021-21191

Original Bulletin: 

Comment: Google reports that an exploit for CVE-2021-21193 exists in the wild.

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Stable Channel Update for Desktop

Friday, March 12, 2021

The Stable channel has been updated to 89.0.4389.90 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 5 security fixes. Below, we highlight fixes that were  
contributed by external researchers. Please see the Chrome Security Page  
for more information.

[$500][1167357] High CVE-2021-21191: Use after free in WebRTC. Reported by  
raven (@raid_akame)  on 2021-01-15

[$TBD][1181387] High CVE-2021-21192: Heap buffer overflow in tab groups.
Reported by Abdulrahman Alqabandi, Microsoft Browser Vulnerability Research 
on 2021-02-23

[$TBD][1186287] High CVE-2021-21193: Use after free in Blink. Reported by
Anonymous on 2021-03-09

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 of reports that an exploit for CVE-2021-21193 exists in the  

As usual, our ongoing internal security work was responsible for a wide  
range of fixes:[1187298] 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.

Prudhvikumar Bommana
Google Chrome

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