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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.2764
                           Google Chrome Update
                              12 August 2020

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Google Chrome
Publisher:         Google
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   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-2020-6555 CVE-2020-6554 CVE-2020-6553
                   CVE-2020-6552 CVE-2020-6551 CVE-2020-6550
                   CVE-2020-6549 CVE-2020-6548 CVE-2020-6547
                   CVE-2020-6546 CVE-2020-6545 CVE-2020-6544
                   CVE-2020-6543 CVE-2020-6542 

Original Bulletin: 
   https://chromereleases.googleblog.com/2020/08/stable-channel-update-for-desktop.html

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Stable Channel Update for Desktop
Monday, August 10, 2020

The stable channel has been updated to 84.0.4147.125 for Windows, Mac, 
and Linux, which will roll out over the coming days/weeks.

A list of all changes is available in the log. Interested in switching 
release channels?  
Find out how. 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 15 security fixes. Below, we highlight fixes that were 
contributed by external researchers. Please see the Chrome Security Page 
for more information.

[$10000][1107433] High CVE-2020-6542: Use after free in ANGLE. 
Reported by Piotr Bania of Cisco Talos on 2020-07-20

[$7500][1104046] High CVE-2020-6543: Use after free in task scheduling. 
Reported by Looben Yang on 2020-07-10

[$7500][1108497] High CVE-2020-6544: Use after free in media. 
Reported by Tim Becker of Theori on 2020-07-22

[$5000][1095584] High CVE-2020-6545: Use after free in audio. 
Reported by Anonymous on 2020-06-16

[$TBD][1100280] High CVE-2020-6546: Inappropriate implementation in installer. 
Reported by Andrew Hess (any1) on 2020-06-29

[$TBD][1102153] High CVE-2020-6547: Incorrect security UI in media. 
Reported by David Albert on 2020-07-05

[$TBD][1103827] High CVE-2020-6548: Heap buffer overflow in Skia. 
Reported by Choongwoo Han, Microsoft Browser Vulnerability Research on 2020-07-09

[$N/A][1105426] High CVE-2020-6549: Use after free in media. 
Reported by Sergei Glazunov of Google Project Zero on 2020-07-14

[$N/A][1106682] High CVE-2020-6550: Use after free in IndexedDB. 
Reported by Sergei Glazunov of Google Project Zero on 2020-07-17

[$N/A][1107815] High CVE-2020-6551: Use after free in WebXR. 
Reported by Sergei Glazunov of Google Project Zero on 2020-07-21

[$TBD][1108518] High CVE-2020-6552: Use after free in Blink. 
Reported by Tim Becker of Theori on 2020-07-22

[$TBD][1111307] High CVE-2020-6553: Use after free in offline mode. 
Reported by Alison Huffman, Microsoft Browser Vulnerability Research on 2020-07-30

[$5000][1094235] Medium CVE-2020-6554: Use after free in extensions. 
Reported by Anonymous on 2020-06-12

[$1000][1105202] Medium CVE-2020-6555: Out of bounds read in WebGL. 
Reported by Marcin Towalski of Cisco Talos on 2020-07-13

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:[1114335] 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.

Google Chrome
Prudhvikumar Bommana

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