Denial of service in BIG-IP FastL4 profile

1) Time-of-check Time-of-use (TOCTOU) Race Condition

EUVDB-ID: #VU59889

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-23029

CWE-ID: CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a race condition in Virtual server with FastL4 profile. A remote attacker can cause a degradation of service and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

BIG-IP: 11.6.1 - 15.1.4

CPE2.3

• cpe:2.3:h:f5_networks:big-ip:11.6.5:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:12.1.6:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:13.1.4:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:14.1.4:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:15.1.4:*:*:*:*:*:*:*

External links

https://support.f5.com/csp/article/K50343028

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.