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                             CERT-Renater

                 Note d'Information No. 2021/VULN330
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DATE                : 18/06/2021

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running Google Chrome versions prior to
                                      91.0.4472.114.

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https://chromereleases.googleblog.com/2021/06/stable-channel-update-for-desktop_17.html
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Stable Channel Update for Desktop
Thursday, June 17, 2021

The Stable channel has been updated to 91.0.4472.114 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 4 security fixes. Below, we highlight fixes that
were contributed by external researchers. Please see the Chrome Security
Page for more information.


[$TBD][1219857] High CVE-2021-30554: Use after free in WebGL. Reported
by anonymous on 2021-06-15

[$10000][1215029] High CVE-2021-30555: Use after free in Sharing.
Reported by David Erceg on 2021-06-01

[$7500][1212599] High CVE-2021-30556: Use after free in WebAudio.
Reported by Yangkang (@dnpushme) of 360 ATA on 2021-05-24

[$10000][1202102] High CVE-2021-30557: Use after free in TabGroups.
Reported by David Erceg on 2021-04-23


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 that an exploit for CVE-2021-30554 exists in the wild.

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



Srinivas Sista
Google Chrome

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+ CERT-RENATER       |    tel : 01-53-94-20-44          +
+ 23/25 Rue Daviel   |    fax : 01-53-94-20-41          +
+ 75013 Paris        |    email:cert@support.renater.fr +
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