Denial of service in F5 BIG-IP TMM AWS



Published: 2020-02-06

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Input validation error

EUVDB-ID: #VU25004

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-5856

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input while processing specifically crafted traffic using the default "xnet" driver. A remote attacker can cause the Traffic Management Microkernel (TMM) process to restart and perform a denial-of-service attack on the BIG-IP Virtual Edition (VE) system hosted in Amazon Web Services (AWS).

Mitigation

Install updates from vendor's website.

Vulnerable software versions

BIG-IP: 14.1.0 - 15.0.1

BIG-IP LTM: 14.1.0 - 15.0.1

BIG-IP AAM: 14.1.0 - 15.0.1

BIG-IP AFM: 14.1.0 - 15.0.1

BIG-IP Analytics: 14.1.2 - 15.0.1

BIG-IP APM: 14.1.2 - 15.0.1

BIG-IP ASM: 14.1.2 - 15.0.1

BIG-IP DNS: 14.1.0 - 15.0.1

BIG-IP FPS: 14.1.2 - 15.0.1

BIG-IP GTM: 14.1.2 - 15.0.1

BIG-IP Link Controller: 14.1.2 - 15.0.1

BIG-IP PEM: 14.1.0 - 15.0.1

External links

http://support.f5.com/csp/article/K00025388


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.



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