#VU26459 Man-in-the-Middle (MitM) attack in F5 Networks products - CVE-2020-5860

Vulnerability identifier: #VU26459

Vulnerability risk: Medium

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2020-5860

CWE-ID: CWE-300

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
BIG-IQ Centralized Management
BIG-IP
BIG-IP LTM
BIG-IP AFM
BIG-IP Analytics
BIG-IP APM
BIG-IP ASM
BIG-IP FPS
BIG-IP GTM
BIG-IP PEM
BIG-IP AAM
BIG-IP DNS
BIG-IP Link Controller

Software vendor:
F5 Networks

The vulnerability allows a remote attacker to perform a man-in-the-middle (MitM) attack.

The vulnerability exists in a High Availability (HA) network failover in Device Service Cluster (DSC) due to the failover service does not require a strong form of authentication and HA network failover traffic is not encrypted by Transport Layer Security (TLS). A remote attacker can perform a man-in-the-middle attack to access the unencrypted HA network failover traffic. 

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

• https://support.f5.com/csp/article/K67472032