Vulnerability identifier: #VU50617

Vulnerability risk: Medium

CVSSv3.1: 4.4 [CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-22982

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
BIG-IP DNS
Hardware solutions / Routers & switches, VoIP, GSM, etc
BIG-IP GTM
Hardware solutions / Security hardware applicances

Vendor: F5 Networks

Description

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

The vulnerability exists due to a boundary error in big3d. A remote user can send specially crafted data to the big3d agent, trigger a buffer overflow and crash the agent.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

BIG-IP DNS: 12.1.0 - 13.1.0.3

BIG-IP GTM: 11.6.1 - 11.6.5.2

---

External links
http://support.f5.com/csp/article/K72708443

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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