Google Chrome: Reduced security - Remote with user interaction

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                         ZMCIRT Vulnerability Bulletin

                             ZMC-2021.06.14.1230
                     Google Chrome: Reduced security - Remote with user interaction
                               14th June 2021

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Product:           Google Chrome
Publisher:         Google
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Reduced Security -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-30553 CVE-2021-30552 CVE-2021-30551
                   CVE-2021-30550 CVE-2021-30549 CVE-2021-30548
                   CVE-2021-30547 CVE-2021-30546 CVE-2021-30545
                   CVE-2021-30544  

Reference:         ASB-2021.0120

Original Bulletin: 
   https://chromereleases.googleblog.com/2021/06/stable-channel-update-for-desktop.html

- --------------------------BEGIN INCLUDED TEXT--------------------

Stable Channel Update for Desktop

Wednesday, June 9, 2021

The Stable channel has been updated to 91.0.4472.101 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 14 security fixes. Below, we highlight fixes that were
contributed by external researchers. Please see the Chrome Security Page for
more information.

[$25000][1212618] Critical CVE-2021-30544: Use after free in BFCache. Reported
by Rong Jian and Guang Gong of 360 Alpha Lab on 2021-05-24

[$20000][1201031] High CVE-2021-30545: Use after free in Extensions. Reported
by kkwon with everpall and kkomdal on 2021-04-21

[$NA][1206911] High CVE-2021-30546: Use after free in Autofill. Reported by
Abdulrahman Alqabandi, Microsoft Browser Vulnerability Research on 2021-05-08

[$TBD][1210414] High CVE-2021-30547: Out of bounds write in ANGLE. Reported by
Seong-Hwan Park (SeHwa) of SecunologyLab on 2021-05-18

[$TBD][1210487] High CVE-2021-30548: Use after free in Loader. Reported by
Yangkang(@dnpushme) & Wanglu of Qihoo360 Qex Team on 2021-05-18

[$TBD][1212498] High CVE-2021-30549: Use after free in Spell check. Reported by
David Erceg on 2021-05-23

[$TBD][1212500] High CVE-2021-30550: Use after free in Accessibility. Reported
by David Erceg on 2021-05-23

[$NA][1216437] High CVE-2021-30551: Type Confusion in V8. Reported by Clement
Lecigne of Google's Threat Analysis Group and Sergei Glazunov of Google Project
Zero on 2021-06-04

[$TBD][1200679] Medium CVE-2021-30552: Use after free in Extensions. Reported
by David Erceg on 2021-04-20

[$TBD][1209769] Medium CVE-2021-30553: Use after free in Network service. 
Reported by Anonymous on 2021-05-17

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-2021-30551 exists in the wild. As
usual, our ongoing internal security work was responsible for a wide range of
fixes:

  o [1218029] 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


 
ZMCIRT has made every effort to ensure that the information contained
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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