Rapid7 Vulnerability & Exploit Database

F5 Networks: K09121542 (CVE-2021-22981): BIG-IP SSL/TLS vulnerability CVE-2021-22981

Back to Search

F5 Networks: K09121542 (CVE-2021-22981): BIG-IP SSL/TLS vulnerability CVE-2021-22981

Severity
6
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:N)
Published
02/10/2021
Created
02/13/2021
Added
02/11/2021
Modified
03/08/2021

Description

On all versions of BIG-IP 12.1.x and 11.6.x, the original TLS protocol includes a weakness in the master secret negotiation that is mitigated by the Extended Master Secret (EMS) extension defined in RFC 7627. TLS connections that do not use EMS are vulnerable to man-in-the-middle attacks during renegotiation. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

Solution(s)

  • f5-big-ip-upgrade-latest

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;