CVE-2017-6168

Severity: high (CVSS 7.4 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 19.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-11-17 · updated 2026-06-17
Weakness: CWE-203

Description

On BIG-IP versions 11.6.0-11.6.2 (fixed in 11.6.2 HF1), 12.0.0-12.1.2 HF1 (fixed in 12.1.2 HF2), or 13.0.0-13.0.0 HF2 (fixed in 13.0.0 HF3) a virtual server configured with a Client SSL profile may be vulnerable to an Adaptive Chosen Ciphertext attack (AKA Bleichenbacher attack) against RSA, which when exploited, may result in plaintext recovery of encrypted messages and/or a Man-in-the-middle (MiTM) attack, despite the attacker not having gained access to the server's private key itself, aka a ROBOT attack.

Affected products

F5 Big-Ip Afm: from 11.6.0 through 11.6.2; from 12.0.0 through 12.1.2; 13.0.0
F5 Big-Ip Analytics: from 11.6.0 through 11.6.2; from 12.0.0 through 12.1.2; 13.0.0
F5 Big-Ip Apm: from 11.6.0 through 11.6.2; from 12.0.0 through 12.1.2; 13.0.0
F5 Networks, Inc. BIG-IP (AAM): from 11.6.0 through 11.6.2; from 12.0.0 through 12.1.2; 13.0.0
F5 Big-Ip Asm: from 11.6.0 through 11.6.2; from 12.0.0 through 12.1.2; 13.0.0
F5 Big-Ip Link Controller: from 11.6.0 through 11.6.2; from 12.0.0 through 12.1.2; 13.0.0
F5 BIG-IP LTM: from 11.6.0 through 11.6.2; from 12.0.0 through 12.1.2; 13.0.0
F5 Big-Ip Pem: from 11.6.0 through 11.6.2; from 12.0.0 through 12.1.2; 13.0.0
F5 Websafe: from 12.0.0 through 12.1.2; 11.6.2, 13.0.0

References

Get alerted when CVE-2017-6168 or the next vulnerability affects your stack