Denial of service in BIG-IP MPTCP

1) Resource management error

EUVDB-ID: #VU51491

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-23003

CWE-ID:

Exploit availability:

Description

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

The vulnerability exists due to improper management of internal resources within the application when processing MPTCP traffic. A remote attacker can send specially crafted data to the system and force TMM to produce a core file, resulting in denial of service.

The vulnerability can be also triggered in rare circumstances by running the tmsh show conn command.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

BIG-IP: 11.6.1 - 16.0.1

BIG-IP LTM: 11.6.1 - 16.0.1

BIG-IP AAM: 11.6.1 - 16.0.1

BIG-IP Advanced WAF: 11.6.1 - 16.0.1

BIG-IP AFM: 11.6.1 - 16.0.1

BIG-IP Analytics: 11.6.1 - 16.0.1

BIG-IP APM: 11.6.1 - 16.0.1

BIG-IP ASM: 11.6.1 - 16.0.1

BIG-IP DDHD: 11.6.1 - 16.0.1

BIG-IP DNS: 11.6.1 - 16.0.1

BIG-IP FPS: 11.6.1 - 16.0.1

BIG-IP GTM: 11.6.1 - 16.0.1

BIG-IP Link Controller: 11.6.1 - 16.0.1

BIG-IP PEM: 11.6.1 - 16.0.1

BIG-IP SSLO: 11.6.1 - 16.0.1

Fixed software versions

CPE2.3

• cpe:2.3:h:f5_networks:big-ip:16.0.0:*:*:*:*:*:*:*

External links

http://support.f5.com/csp/article/K43470422

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?