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                         AUSCERT Security Bulletin

                               ASB-2020.0105
                     Stable Channel Update for Desktop
                                4 June 2020

===========================================================================

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

Product:              Google Chrome
Operating System:     Windows
                      Linux variants
                      Mac OS
Impact/Access:        Denial of Service              -- Remote with User Interaction
                      Provide Misleading Information -- Remote with User Interaction
                      Reduced Security               -- Remote with User Interaction
Resolution:           Patch/Upgrade
CVE Names:            CVE-2020-6498 CVE-2020-6497 CVE-2020-6496
                      CVE-2020-6495 CVE-2020-6494 CVE-2020-6493
Member content until: Saturday, July  4 2020

OVERVIEW

        Google has announced that the stable channel has been updated to 
        83.0.4103.97 for Windows, Mac, and  Linux, which will roll out over the 
        coming days/weeks. This update includes 5 security fixes. [1]


IMPACT

        Google has provided the following information regarding the vulnerabilities
        addressed:
        
        "This update includes 5 security fixes. Below, we highlight fixes that were  
        contributed by external researchers. Please see the Chrome Security Page  
        for more information.
        
        [$20000][1082105] High CVE-2020-6493: Use after free in WebAuthentication.  
        Reported by Anonymous on 2020-05-13
        
        [$7500][1083972] High CVE-2020-6494: Incorrect security UI in payments. 
        Reported by Juho Nurminen on 2020-05-18
        
        [$TBD][1072116] High CVE-2020-6495: Insufficient policy  enforcement in developer tools. 
        Reported by David Erceg on  2020-04-18
        
        [$N/A][1085990] High CVE-2020-6496: Use after free in payments. 
        Reported by Khalil Zhani on 2020-05-24
        
        We also released these 2 security fixes in Chrome for IOS release (83.0.4103.88).  
        Below, we highlight fixes that were contributed by external researchers. 
        Please see the Chrome Security Page for more information.
        
        [$1500][1069246] Medium CVE-2020-6497: Insufficient policy enforcement in Omnibox.
        Reported by Rayyan Bijoora on 2020-04-08
        [$500][1081081] Medium  CVE-2020-6498: Incorrect security UI in progress display. 
        Reported by Rayyan Bijoora on 2020-05-11" [1]


MITIGATION

        The stable channel has been updated to 83.0.4103.97 for Windows, Mac, and  
        Linux, which will roll out over the coming days/weeks. [1]


REFERENCES

        [1] Google Chrome Releases - Stable Channel Update for Desktop
            https://chromereleases.googleblog.com/2020/06/stable-channel-update-for-desktop.html

AusCERT 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. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours 
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
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