Man-in-the-middle in F5 BIG-IP AFM

1) Man-in-the-middle attack

EUVDB-ID: #VU10146

Risk: Low

CVSSv4.0: 1.7 [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:Clear]

CVE-ID: CVE-2017-6142

CWE-ID: CWE-300 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')

Exploit availability: No

Description

The vulnerability allows a remote attacker to conduct man-in-the-middle attack.

The weakness exists due to the early access 'user id' feature does not properly validate the remote server's X.509 certificatel. A remote attacker can use man-in-the-middle technique and access and modify IP Intelligence (IPI) policy enforcement data communicated between the remote server and the target Advanced Firewall Manager.

Mitigation

Install update from vendor's website.

Vulnerable software versions

BIG-IP AFM: 11.6.3 - 13.1.0

CPE2.3

• cpe:2.3:h:f5_networks:big-ip_afm:11.6.3:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_afm:12.1.2:HF1:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_afm:12.1.3:*:*:*:*:*:*:*

External links

https://support.f5.com/csp/article/K20682450

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.