#VU51584 Input validation error in BIG-IP - CVE-2021-23007

Vulnerability identifier: #VU51584

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-2021-23007

CWE-ID: CWE-20

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 insufficient validation of user-supplied input in TMM when handling fragmented IP traffic. A remote attacker can send specially crafted packets to the system and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

BIG-IP: 11.5.4.2.74.291 HF2, 12.1.4.1.0.97.6 Hotfix-ENG, 14.0.0 - 14.0.1.1, 14.1.0 - 14.1.4, 15.0.0 - 15.0.1.4, 15.1.0 - 15.1.2.1, 16.0.0 - 16.0.1.1

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External links
https://support.f5.com/csp/article/K37451543

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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.