SB2020050509 - Multiple vulnerabilities in F5 BIG-IP products

Description

This security bulletin contains information about 2 vulnerabilities.

1) Missing Encryption of Sensitive Data (CVE-ID: CVE-2020-5886)

CWE-ID: CWE-311 - Missing Encryption of Sensitive Data

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

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the BIG-IP systems setup for connection mirroring in a High Availability (HA) pair transfers sensitive cryptographic objects over an insecure communications channel. A remote attacker can read and modify the Diffie-Hellman (DH) parameters used by data plane SSL/TLS enabled virtual servers.

2) Improper Authentication (CVE-ID: CVE-2020-5888)

CWE-ID: CWE-287 - Improper Authentication

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

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in TMM in Virtual Edition. A remote attacker on the local network can access local daemons and bypass port lockdown settings.

Remediation

Install update from vendor's website.

References

• https://support.f5.com/csp/article/K65720640
• https://support.f5.com/csp/article/K73274382