#VU27303 Man-in-the-Middle (MitM) attack in NGINX Controller - CVE-2020-5867
Published: April 24, 2020
Vulnerability identifier: #VU27303
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-5867
CWE-ID: CWE-300
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
NGINX Controller
NGINX Controller
Software vendor:
F5 Networks
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.
Remediation
Install updates from vendor's website.