Vulnerability identifier: #VU71817
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-2023-22839
CWE-ID:
CWE-476
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
BIG-IP
Hardware solutions /
Firmware
BIG-IP DNS
Hardware solutions /
Routers & switches, VoIP, GSM, etc
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 dreference error when a DNS profile with the Rapid Response Mode setting enabled is configured on a virtual server with hardware SYN cookies enabled. A remote attacker can send specially crafted traffic to the device and perform a denial of service (DoS) attack.
Mitigation
Install update from vendor's website.
According to vendor the following models are affected by this vulnerability:
Vulnerable software versions
BIG-IP: 14.1.0 - 14.1.5.2, 15.1.0 - 15.1.8, 16.1.0 - 16.1.3.2, 17.0.0 - 17.0.0.1
BIG-IP DNS: 14.1.0 - 17.0.0.1
External links
https://my.f5.com/manage/s/article/K37708118
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.