Vulnerability identifier: #VU46575

Vulnerability risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-5929

CWE-ID: CWE-310

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
BIG-IP
Hardware solutions / Firmware
BIG-IP DDHD
Hardware solutions / Firmware
BIG-IP SSLO
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
BIG-IP Advanced WAF
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor: F5 Networks

Description

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

The vulnerability exists due to usage of insecue Anonymous Diffie-Hellman (ADH) or Ephemeral Diffie-Hellman (DHE) ciphers. A remote attacker can use multiple crafted SSL/TLS handshakes to the vulnerable BIG-IP virtual server, recover the shared secret of past sessions and perform plaintext recovery of encrypted messages.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

BIG-IP: 11.6.1 - 11.6.2, 13.0.0, 12.1.0 - 12.1.2 HF1

BIG-IP LTM: 11.6.1 - 13.0.0

BIG-IP AAM: 11.6.1 - 13.0.0

BIG-IP Advanced WAF: 11.6.1 - 13.0.0

BIG-IP AFM: 11.6.1 - 13.0.0

BIG-IP Analytics: 11.6.1 - 13.0.0

BIG-IP APM: 11.6.1 - 13.0.0

BIG-IP ASM: 11.6.1 - 13.0.0

BIG-IP DDHD: 11.6.1 - 13.0.0

BIG-IP DNS: 11.6.1 - 13.0.0

BIG-IP FPS: 11.6.1 - 13.0.0

BIG-IP GTM: 11.6.1 - 13.0.0

BIG-IP Link Controller: 11.6.1 - 13.0.0

BIG-IP PEM: 11.6.1 - 13.0.0

BIG-IP SSLO: 11.6.1 - 13.0.0

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External links
http://support.f5.com/csp/article/K91158923

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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.