Open redirect in Microsoft Exchange Server - CVE-2016-3378

Vulnerability identifier: #VU5418

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2016-3378

CWE-ID: CWE-601

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: Microsoft

Affected software:
Microsoft Exchange Server

The vulnerability allows a remote attacker to perform spoofing attacks.

Open redirect vulnerability exists due to insufficient verification of URL when redirecting users to external websites. A remote attacker can create a specially crafted link, trick the victim into following it and redirect the victim to malicious website.

Successful exploitation of the vulnerability will allow to steal valid user's credentials and use the information to conduct further attacks.

Install update from vendor's website.

• https://technet.microsoft.com/en-us/library/security/ms16-108.aspx