Denial of service in BIG-IP DNS resolver

1) Improper Check for Unusual or Exceptional Conditions

EUVDB-ID: #VU62813

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-2022-28706

CWE-ID: CWE-754 - Improper Check for Unusual or Exceptional Conditions

Exploit availability: No

Description

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

The vulnerability exists due to incorrect validation of errors in the DNS resolver configuration. A remote attacker can send specially crafted traffic to the affected device and cause the Traffic Management Microkernel (TMM) to terminate.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

BIG-IP: 15.1.0 - 16.1.1

CPE2.3

• cpe:2.3:h:f5_networks:big-ip:15.1.0:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:15.1.0.1:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:15.1.0.2:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:15.1.0.4:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:15.1.0.5:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:15.1.1:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:15.1.2:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:15.1.2.1:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:15.1.3:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip:15.1.3.1:*:*:*:*:*:*:*

External links

https://support.f5.com/csp/article/K03755971

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.