Executive Summary

An information disclosure vulnerability exists in the way that Microsoft Exchange Server handles URL redirects. If an impacted user is using Microsoft Exchange Outlook Web Access (OWA) Light, the vulnerability could allow an attacker to discover sensitive information that should otherwise not be disclosed, such as the URL of the user's OWA service. To exploit the vulnerability, an attacker could embed a link in an email and send it to a victim. The attacker would then have to trick the user into clicking the link. The attacker would be unable to force the user to click the link. The security update addresses the vulnerability by correcting how Microsoft Exchange handles URL redirects.

Overview

Low
MS Severity
Not Exploited
MS Exploit Status
Exploitation Unlikely
MS Exploit Likelihood
Category Information Disclosure
Released Mar 13 2018
Last Updated Mar 13 2018
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known

EPSS Score

No EPSS score available for this CVE.

View on FIRST.org

Affected Products

6 affected products
Product KB Article Severity Impact Restart Required
Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 20 4073537 (Security Update) Low Information Disclosure Maybe
Microsoft Exchange Server 2013 Cumulative Update 18 4073392 (Security Update) Low Information Disclosure Maybe
Microsoft Exchange Server 2013 Cumulative Update 19 4073392 (Security Update) Low Information Disclosure Maybe
Microsoft Exchange Server 2013 Service Pack 1 4073392 (Security Update) Low Information Disclosure Maybe
Microsoft Exchange Server 2016 Cumulative Update 7 4073392 (Security Update) Low Information Disclosure Maybe
Microsoft Exchange Server 2016 Cumulative Update 8 4073392 (Security Update) Low Information Disclosure Maybe

Patches

2 patches
Article Type Restart
4073537 Security Update Maybe
4073392 Security Update Maybe

Known Exploits

Acknowledgments