#VU59891 NULL pointer dereference in BIG-IP - CVE-2022-23021

Vulnerability identifier: #VU59891

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-23021

CWE-ID: CWE-476

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
BIG-IP
Hardware solutions / Firmware

Vendor: F5 Networks

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

This vulnerability affects the Virtual server with any of the following profiles or policies configured:

• HTTP redirect rule in an LTM policy
• BIG-IP APM Access Profile
• Explicit HTTP Proxy in the HTTP Profile

Mitigation
Install update from vendor's website.

Vulnerable software versions

BIG-IP: 16.1.0 - 16.1.1

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External links
https://support.f5.com/csp/article/K57111075

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.