Google Chrome: Reduced security - Remote with user interaction

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                         ZMCIRT Vulnerability Bulletin

                             ZMC-2021.10.8.0800
                   Google Chrome: Reduced security - Remote with user interaction
                               8th October 2021

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Product:           Google Chrome
Publisher:         Google
Operating System:  UNIX variants (UNIX, Linux, OSX)
                   Windows
Impact/Access:     Reduced Security -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-37980 CVE-2021-37979 CVE-2021-37978
                   CVE-2021-37977  

Original Bulletin: 
   https://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop.html

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Stable Channel Update for Desktop

Thursday, October 7, 2021

The Stable channel has been updated to 94.0.4606.81 for Windows, Mac and Linux 
which will roll out over the coming days/weeks. Extended stable channel has
also been updated to 94.0.4606.81 for Windows and Mac 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 4 security fixes. Below, we highlight fixes that were
contributed by external researchers. Please see the Chrome Security Page for
more information.

[$10000][1252878] High CVE-2021-37977 : Use after free in Garbage Collection. 
Reported by Anonymous on 2021-09-24

[$7500][1236318] High CVE-2021-37978 : Heap buffer overflow in Blink. Reported
by Yangkang (@dnpushme) of 360 ATA on 2021-08-04

[$7500][1247260] High CVE-2021-37979 : Heap buffer overflow in WebRTC. Reported
by Marcin Towalski of Cisco Talos on 2021-09-07

[$3000][1254631] High CVE-2021-37980 : Inappropriate implementation in Sandbox.
Reported by Yonghwi Jin (@jinmo123) on 2021-09-30

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.

Many of our security bugs are detected using AddressSanitizer, MemorySanitizer,
UndefinedBehaviorSanitizer, Control Flow Integrity, libFuzzer, or AFL.

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.

Srinivas Sista
Google Chrome

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in this document is accurate.  However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. ZMCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.

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