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AUSCERT External Security Bulletin Redistribution
Vulnerabilities in Microsoft Exchange Server Could Allow
Remote Code Execution (2915705)
10 December 2013
AusCERT Security Bulletin Summary
Product: Microsoft Exchange Server
Operating System: Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Cross-site Scripting -- Remote with User Interaction
CVE Names: CVE-2013-5791 CVE-2013-5763 CVE-2013-5072
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Microsoft Security Bulletin MS13-105 - Critical
Vulnerabilities in Microsoft Exchange Server Could Allow Remote Code Execution
Published Date: December 10, 2013
This security update resolves three publicly disclosed vulnerabilities and one
privately reported vulnerability in Microsoft Exchange Server. The most severe
of these vulnerabilities exist in the WebReady Document Viewing and Data Loss
Prevention features of Microsoft Exchange Server. These vulnerabilities could
allow remote code execution in the security context of the LocalService
account if an attacker sends an email message containing a specially crafted
file to a user on an affected Exchange server. The LocalService account has
minimum privileges on the local system and presents anonymous credentials on
This security update is rated Critical for all supported editions of Microsoft
Exchange Server 2007, Microsoft Exchange Server 2010, and Microsoft Exchange
Server 2013. For more information, see the subsection, Affected and
Non-Affected Software, in this section.
Microsoft Exchange Server 2007 Service Pack 3
Microsoft Exchange Server 2010 Service Pack 2
Microsoft Exchange Server 2010 Service Pack 3
Microsoft Exchange Server 2013 Cumulative Update 2
Microsoft Exchange Server 2013 Cumulative Update 3
Oracle Outside In Contains Multiple Exploitable Vulnerabilities
Two of the vulnerabilities addressed in this bulletin, CVE-2013-5763 and
CVE-2013-5791, exist in Exchange Server 2007, Exchange Server 2010, and
Exchange Server 2013 through the WebReady Document Viewing feature. The
vulnerabilities could allow remote code execution as the LocalService account
if a user views a specially crafted file through Outlook Web Access in a
browser. An attacker who successfully exploited this vulnerability could run
code on the affected Exchange Server, but only as the LocalService account.
The LocalService account has minimum privileges on the local computer and
presents anonymous credentials on the network.
In addition, CVE-2013-5763 and CVE-2013-5791 exist in Exchange Server 2013
through the Data Loss Protection (DLP) feature. This vulnerability could cause
the affected Exchange Server to become unresponsive if a user sends or
receives a specially crafted file.
MAC Disabled Vulnerability - CVE-2013-1330
A remote code execution vulnerability exists in Microsoft Exchange Server. An
attacker who successfully exploited this vulnerability could run arbitrary
code in the context of the Outlook Web Access (OWA) service account.
OWA XSS Vulnerability - CVE-2013-5072
An elevation of privilege vulnerability exists in Microsoft Exchange Server.
An attacker who successfully exploited this vulnerability could run script in
the context of the current user.
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