Security News > 2022 > May > F5 warns of critical BIG-IP RCE bug allowing device takeover
F5 has issued a security advisory warning about a flaw that may allow unauthenticated attackers with network access to execute arbitrary system commands, perform file actions, and disable services on BIG-IP. The vulnerability is tracked as CVE-2022-1388 and has a CVSS v3 severity rating of 9.8, categorized as critical.
According to F5's security advisory, the flaw lies in the iControl REST component and allows a malicious actor to send undisclosed requests to bypass the iControl REST authentication in BIG-IP. Due to the severity of the vulnerability and the widespread deployment of BIG-IP products in critical environments, CISA has also issued an alert today.
Block all access to the iControl REST interface of your BIG-IP system through self IP addresses, restrict access only to trusted users and devices via the management interface, or modify the BIG-IP httpd configuration.
Finally, F5 has released a more generic advisory to cover an additional set of 17 high-severity vulnerabilities discovered and fixed in BIG-IP, so make sure to check that one too.
With F5 BIG-IP devices commonly used in the enterprise, this vulnerability presents a significant risk for allowing threat actors to gain initial access to corporate networks.
Using the query shared by Warfield, Shodan shows that there are currently 16,142 F5 BIG-IP devices publicly exposed to the Internet.
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Related Vulnerability
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2022-05-05 | CVE-2022-1388 | Missing Authentication for Critical Function vulnerability in F5 products On F5 BIG-IP 16.1.x versions prior to 16.1.2.2, 15.1.x versions prior to 15.1.5.1, 14.1.x versions prior to 14.1.4.6, 13.1.x versions prior to 13.1.5, and all 12.1.x and 11.6.x versions, undisclosed requests may bypass iControl REST authentication. | 9.8 |