Operating System:

[WIN]

Published:

09 March 2020

Protect yourself against future threats.

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                         AUSCERT Security Bulletin

                              ASB-2020.0045.2
    Microsoft Patch Tuesday (February 2020): Microsoft Exchange Server
                               9 March 2020

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

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

Product:              Exchange Server 2010 SP3
                      Exchange Server 2013
                      Exchange Server 2016
                      Exchange Server 2019
Operating System:     Windows
Impact/Access:        Administrator Compromise -- Existing Account
                      Increased Privileges     -- Existing Account
Resolution:           Patch/Upgrade
CVE Names:            CVE-2020-0692 CVE-2020-0688 
Member content until: Saturday, March 14 2020

Revision History:     March     9 2020: Reports are circulating that
                                        CVE-2020-0688 is being exploited in the wild.
                      February 13 2020: Initial Release

OVERVIEW

        Microsoft has released its monthly security patch update for the month of February 2020.
        
        This update resolves 2 vulnerabilities across the following products: [1]
        
         Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 30
         Microsoft Exchange Server 2013 Cumulative Update 23
         Microsoft Exchange Server 2016 Cumulative Update 14
         Microsoft Exchange Server 2016 Cumulative Update 15
         Microsoft Exchange Server 2019 Cumulative Update 3
         Microsoft Exchange Server 2019 Cumulative Update 4
        
        There are reports that CVE-2020-0688, an authenticated RCE, is
        being exploited in the wild. [2]


IMPACT

        Microsoft has given the following details regarding these vulnerabilities.
        
         Details         Impact                   Severity
         CVE-2020-0688   Remote Code Execution    Important
         CVE-2020-0692   Elevation of Privilege   Important


MITIGATION

        Microsoft recommends updating the software with the version made
        available on the Microsoft Update Catalogue for the following
        Knowledge Base articles. [1]
        
         KB4536989, KB4536987, KB4536988


REFERENCES

        [1] Microsoft Security Update Guidance
            https://portal.msrc.microsoft.com/en-us/security-guidance
        [2] Volexity Threat Research: Microsoft Exchange Control Panel (ECP)
            Vulnerability CVE-2020-0688 Exploited
            https://www.volexity.com/blog/2020/03/06/microsoft-exchange-control-panel-ecp-vulnerability-cve-2020-0688-exploited/

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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