Vulnerability identifier: #VU6779

Vulnerability risk: Low

CVSSv3.1: 4.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-3126

CWE-ID: CWE-601

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FortiAnalyzer
Server applications / IDS/IPS systems, Firewalls and proxy servers
FortiManager
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: Fortinet, Inc

Description
The vulnerability allows a remote attacker to redirect website visitors to external websites.

The weakness exists due to incorrect validation of redirected URL. A remote attacker can create a specially crafted link and redirect the victim on potentially dangerous website.

Successful exploitation of the vulnerability may allow an attacker to perform phishing attack.

Mitigation
Update to version 5.4.3.

Vulnerable software versions

FortiAnalyzer: 5.4.0 - 5.4.2

FortiManager: 5.4.0 - 5.4.2

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External links
http://fortiguard.com/psirt/FG-IR-17-014

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Q & A

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.