CVE-2017-6168 Weak cryptography in n/a

High 7.4 Published Updated

Attackers can recover plaintext or perform man-in-the-middle attacks via Bleichenbacher vulnerability in Client SSL profiles on BIG-IP devices.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2017-6168?

CVE-2017-6168 is a high-severity vulnerability in F5 Big-Ip Analytics, published on 17 Nov 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-203

Which versions are affected by CVE-2017-6168?

It affects 9 products.

Products include F5 Big-Ip Afm, F5 Big-Ip Analytics, F5 Big-Ip Apm, F5 Big-Ip Application Acceleration Manager, F5 Big-Ip Asm, F5 Big-Ip Link Controller and 3 more.

How do I fix CVE-2017-6168?

No fix has been published for CVE-2017-6168 yet. Limit exposure of the affected software until one is available.

Is CVE-2017-6168 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-6168 exists.

Public exploit code: 1 Metasploit module.

All F5 Big-Ip Analytics vulnerabilities

Sources

Also known as GHSA-j523-gf5p-f8pm.

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