Vulnerability identifier: #VU11007
Vulnerability risk: Medium
CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-79
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Microsoft Exchange Server
Server applications /
Mail servers
Vendor: Microsoft
Description
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data passed via hyperlinks in the email body. A remote attacker can create a specially crafted email message and execute arbitrary HTML and script code in user's browser in context of Outlook Web Access (OWA) website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Microsoft Exchange Server: 2013 Service Pack 1 15.00.0847.032 - 2013 Cumulative Update 19 15.00.1365.001, 2016 Cumulative Update 7 15.01.1261.035 - 2016 Cumulative Update 8 15.01.1415.002, 2010 Service Pack 3 Update Rollup 20
External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0940
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.