Pierluigi Paganini May 09, 2022

A few days after F5 addressed the critical CVE-2022-1388 Remote Code execution flaw in its BIG-IP products, researchers created exploits for it.

Last week security and application delivery solutions provider F5 released its security notification to inform customers that it has released security updates from tens of vulnerabilities in its products.

The company addressed a total of 43 vulnerabilities, the most severe one is a critical issue tracked as CVE-2022-1388 (CVSS score of 9.8). An unauthenticated attacker with network access to the BIG-IP system through the management port and/or self IP addresses can exploit the CVE-2022-1388 flaw to execute arbitrary system commands, create or delete files, or disable services.

“This vulnerability may allow an unauthenticated attacker with network access to the BIG-IP system through the management port and/or self IP addresses to execute arbitrary system commands, create or delete files, or disable services. There is no data plane exposure; this is a control plane issue only.” reads the advisory published by the vendor.”

The flaw affects the following versions:

16.1.0 – 16.1.2
15.1.0 – 15.1.5
14.1.0 – 14.1.4
13.1.0 – 13.1.4
12.1.0 – 12.1.6
11.6.1 – 11.6.5

and the vendor addressed it with the release of:

17.0.0
16.1.2.2
15.1.5.1
14.1.4.6
13.1.5

The company provided the following temporary mitigations for customers that cannot install the patched versions:

• Block iControl REST access through the self IP address
• Block iControl REST access through the management interface
• Modify the BIG-IP httpd configuration

Now researchers at Positive Technologies announced to have developed an exploit code for CVE-2022-1388 in F5’s BIG-IP and urge admins to address it asap to protect their systems.

Researchers from Horizon3 Attack Team also confirmed that the CVE-2022-1388 is trivial to exploit, the experts also plan to release a POC exploit code this week.

Researchers are warning of threat actors already attempting to exploit this vulnerability:

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Pierluigi Paganini

(SecurityAffairs – hacking, F5 BIG)

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