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AUSCERT Security Bulletin
ASB-2018.0103.2
Security updates for Microsoft Exchange Server
14 September 2018
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AusCERT Security Bulletin Summary
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Product: Microsoft Exchange Server
Operating System: Windows
Impact/Access: Root Compromise -- Remote/Unauthenticated
Increased Privileges -- Remote with User Interaction
Provide Misleading Information -- Remote with User Interaction
Access Confidential Data -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2018-8159 CVE-2018-8154 CVE-2018-8153
CVE-2018-8152 CVE-2018-8151
Revision History: September 14 2018: Vendor update re CVE-2018-8154 and new comprehensive security update 4458321
May 9 2018: Initial Release
OVERVIEW
Microsoft has released its monthly security patch update for the month of May
2018. [1] This update resolves 5 vulnerabilities across the following
products:
Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 21
Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 24
Microsoft Exchange Server 2013 Cumulative Update 19
Microsoft Exchange Server 2013 Cumulative Update 20
Microsoft Exchange Server 2013 Service Pack 1
Microsoft Exchange Server 2016 Cumulative Update 8
Microsoft Exchange Server 2016 Cumulative Update 9
IMPACT
Microsoft has given the following details regarding these vulnerabilities.
Details Impact Severity
CVE-2018-8151 Information Disclosure Important
CVE-2018-8152 Elevation of Privilege Important
CVE-2018-8153 Spoofing Low
CVE-2018-8154 Remote Code Execution Critical
CVE-2018-8159 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]
KB4091243, KB4092041
KB4458321 [2]
REFERENCES
[1] Security Update Guide
https://portal.msrc.microsoft.com/en-us/security-guidance
[2] Update Rollup 24 for Exchange Server 2010 Service Pack 3
https://support.microsoft.com/en-gb/help/4458321/update-rollup-24-for-exchange-server-2010-service-pack-3
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.
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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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