Vulnerability identifier: #VU27520

Vulnerability risk: Medium

CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-5886

CWE-ID: CWE-311

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
BIG-IP
Hardware solutions / Firmware
BIG-IP LTM
Hardware solutions / Security hardware applicances
BIG-IP AFM
Hardware solutions / Security hardware applicances
BIG-IP Analytics
Hardware solutions / Security hardware applicances
BIG-IP APM
Hardware solutions / Security hardware applicances
BIG-IP ASM
Hardware solutions / Security hardware applicances
BIG-IP FPS
Hardware solutions / Security hardware applicances
BIG-IP GTM
Hardware solutions / Security hardware applicances
BIG-IP PEM
Hardware solutions / Security hardware applicances
BIG-IP AAM
Hardware solutions / Routers & switches, VoIP, GSM, etc
BIG-IP DNS
Hardware solutions / Routers & switches, VoIP, GSM, etc
BIG-IP Link Controller
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: F5 Networks

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the BIG-IP systems setup for connection mirroring in a High Availability (HA) pair transfers sensitive cryptographic objects over an insecure communications channel. A remote attacker can read and modify the Diffie-Hellman (DH) parameters used by data plane SSL/TLS enabled virtual servers.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

BIG-IP: 12.1.0 - 12.1.5, 13.1.0 - 13.1.3, 14.1.0 - 14.1.2, 15.0.0 - 15.0.1, 15.1.0

BIG-IP LTM: 12.1.0 - 15.1.0

BIG-IP AAM: 12.1.0 - 15.1.0

BIG-IP AFM: 12.1.0 - 15.1.0

BIG-IP Analytics: 12.1.0 - 15.1.0

BIG-IP APM: 12.1.0 - 15.1.0

BIG-IP ASM: 12.1.0 - 15.1.0

BIG-IP DNS: 12.1.0 - 15.1.0

BIG-IP FPS: 12.1.0 - 15.1.0

BIG-IP GTM: 12.1.0 - 15.1.0

BIG-IP Link Controller: 12.1.0 - 15.1.0

BIG-IP PEM: 12.1.0 - 15.1.0

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External links
http://support.f5.com/csp/article/K65720640

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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.