Microsoft Exchange Server Information Disclosure Vulnerability

by CIRT Team

CVE-2016-0028: Outlook Web Access (OWA) in Microsoft Exchange Server 2013 SP1, Cumulative Update 11, Cumulative Update 12 and 2016 Gold and Cumulative Update 1 does not properly restrict loading of IMG elements, which makes it easier for remote attackers to track users via a crafted HTML e-mail message, aka “Microsoft Exchange Information Disclosure Vulnerability.”

Impact: An attacker can exploit this issue to conduct spoofing attacks and perform unauthorized actions, other attacks are also possible.

Mitigation: Vendor has released patch version.

Reference URL’s:

• http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0028
• https://technet.microsoft.com/library/security/ms16-079
• https://tools.cisco.com/security/center/viewAlert.x?alertId=46549

CIRT Team

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