Vulnerability identifier: #VU27303

Vulnerability risk: Medium

CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-5867

CWE-ID: CWE-300

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 perform a man-in-the-middle (MitM) attack.

The vulnerability exists due to the NGINX Controller Agent installer script "install.sh" uses HTTP instead of HTTPS to check and install packages. A remote attacker can perform a MitM attack, intercept the insecure HTTP channel, convincingly forge any packages and get the malicious packages installed on the NGINX Plus instance.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

NGINX Controller: 1.0.1 - 3.2.0

---

External links
http://support.f5.com/csp/article/K00958787

---

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.