Vulnerability identifier: #VU27574

Vulnerability risk: Medium

CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-5894

CWE-ID: CWE-613

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
NGINX Controller
Server applications / Web servers

Vendor: F5 Networks

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to NGINX Controller webserver does not invalidate the the server-side session token when users log out. A remote non-authenticated attacker can obtain or guess session token and gain unauthorized access to session that belongs to another user.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

NGINX Controller: 3.0.0 - 3.3.0

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External links
http://docs.nginx.com/nginx-controller/releases/#nginx-controller-version-3-4-0

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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.