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             AUSCERT External Security Bulletin Redistribution

                     Stable Channel Update for Desktop
                             1 September 2021


        AusCERT Security Bulletin Summary

Product:           Google Chrome
Publisher:         Google
Operating System:  UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Reduced Security -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-30624 CVE-2021-30623 CVE-2021-30622
                   CVE-2021-30621 CVE-2021-30620 CVE-2021-30619
                   CVE-2021-30618 CVE-2021-30617 CVE-2021-30616
                   CVE-2021-30615 CVE-2021-30614 CVE-2021-30613
                   CVE-2021-30612 CVE-2021-30611 CVE-2021-30610
                   CVE-2021-30609 CVE-2021-30608 CVE-2021-30607

Original Bulletin: 

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Stable Channel Update for Desktop

Tuesday, August 31, 2021
The Chrome team is delighted to announce the promotion of Chrome 93 to the
stable channel for Windows, Mac and Linux. This will roll out over the coming
Chrome 93.0.4577.63 contains a number of fixes and improvements -- a list of
changes is available in the log. Watch out for upcoming Chrome and Chromium
 blog posts about new features and big efforts delivered in 93.

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 27 security fixes. Below, we highlight fixes that were
contributed by external researchers. Please see the Chrome Security Page for
more information.

[$20000][1233975] High CVE-2021-30606: Use after free in Blink. Reported by Nan
Wang (@eternalsakura13) and koocola (@alo_cook) of 360 Alpha Lab on 2021-07-28

[$10000][1235949] High CVE-2021-30607: Use after free in Permissions. Reported
by Weipeng Jiang (@Krace) from Codesafe Team of Legendsec at Qi'anxin Group on

[$7500][1219870] High CVE-2021-30608: Use after free in Web Share. Reported by
Huyna at Viettel Cyber Security on 2021-06-15

[$5000][1239595] High CVE-2021-30609: Use after free in Sign-In. Reported by
raven (@raid_akame)  on 2021-08-13

[$N/A][1200440] High CVE-2021-30610: Use after free in Extensions API. Reported
by Igor Bukanov from Vivaldi on 2021-04-19

[$20000][1233942] Medium CVE-2021-30611: Use after free in WebRTC. Reported by
Nan Wang (@eternalsakura13) and koocola (@alo_cook) of 360 Alpha Lab on

[$20000][1234284] Medium CVE-2021-30612: Use after free in WebRTC. Reported by
Nan Wang (@eternalsakura13) and koocola (@alo_cook) of 360 Alpha Lab on

[$15000][1209622] Medium CVE-2021-30613: Use after free in Base internals. 
Reported by Yangkang (@dnpushme) of 360 ATA on 2021-05-16

[$10000][1207315] Medium CVE-2021-30614: Heap buffer overflow in TabStrip. 
Reported by Huinian Yang (@vmth6) of Amber Security Lab, OPPO Mobile
Telecommunications Corp. Ltd.  on 2021-05-10

[$5000][1208614] Medium CVE-2021-30615: Cross-origin data leak in Navigation. 
Reported by NDevTK on 2021-05-12

[$5000][1231432] Medium CVE-2021-30616: Use after free in Media. Reported by
Anonymous on 2021-07-21

[$3000][1226909] Medium CVE-2021-30617: Policy bypass in Blink. Reported by
NDevTK on 2021-07-07

[$3000][1232279] Medium CVE-2021-30618: Inappropriate implementation in
DevTools. Reported by @DanAmodio and @mattaustin from Contrast Security on

[$3000][1235222] Medium CVE-2021-30619: UI Spoofing in Autofill. Reported by
Alesandro Ortiz on 2021-08-02

[$NA][1063518] Medium CVE-2021-30620: Insufficient policy enforcement in Blink.
Reported by Jun Kokatsu, Microsoft Browser Vulnerability Research on 2020-03-20

[$NA][1204722] Medium CVE-2021-30621: UI Spoofing in Autofill. Reported by
Abdulrahman Alqabandi, Microsoft Browser Vulnerability Research on 2021-04-30

[$NA][1224419] Medium CVE-2021-30622: Use after free in WebApp Installs. 
Reported by Jun Kokatsu, Microsoft Browser Vulnerability Research on 2021-06-28

[$10000][1223667] Low CVE-2021-30623: Use after free in Bookmarks. Reported by
Leecraso and Guang Gong of 360 Alpha Lab on 2021-06-25

[$TBD][1230513] Low CVE-2021-30624: Use after free in Autofill. Reported by Wei
Yuan of MoyunSec VLab on 2021-07-19

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

  o [1245324] 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.

Prudhvikumar Bommana
Google Chrome

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