ALERT Google Chrome: Multiple vulnerabilities

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                         ZMCIRT Vulnerability Bulletin

                             ZMC-2021.10.4.1100
                   ALERT Google Chrome: Multiple vulnerabilities
                               4th October 2021

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Product:           Google Chrome
Publisher:         Google
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Denial of Service        -- Remote with User Interaction
                   Access Confidential Data -- Remote with User Interaction
                   Reduced Security         -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-37976 CVE-2021-37975 CVE-2021-37974

Original Bulletin: 
   https://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop_30.html

Comment: Google is aware the exploits for CVE-2021-37975 and CVE-2021-37976 exist in the
         wild.

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Chrome Releases

Release updates from the Chrome team

Stable Channel Update for Desktop

Thursday, September 30, 2021

The Stable channel has been updated to 94.0.4606.71 for Windows, Mac and Linux 
which will roll out over the coming days/weeks. Extended stable channel has
also been updated to 94.0.4606.71 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.

[$20000][1245578] High CVE-2021-37974 : Use after free in Safe Browsing. 
Reported by Weipeng Jiang (@Krace) from Codesafe Team of Legendsec at Qi'anxin
Group on 2021-09-01

[$TBD][1252918] High CVE-2021-37975 : Use after free in V8. Reported by
Anonymous on 2021-09-24

[$NA][1251787] Medium CVE-2021-37976 : Information leak in core. Reported by
Clement Lecigne from Google TAG, with technical assistance from Sergei Glazunov
and Mark Brand from Google Project Zero on 2021-09-21


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 the exploits for CVE-2021-37975 and CVE-2021-37976 exist in the
wild. 


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

  o [1254756] 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.


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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