CVE-2020-27718

Published: Dec 24, 2020Modified: Jun 17, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

When a BIG-IP ASM or Advanced WAF system running version 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.3, 13.1.0-13.1.3.4, 12.1.0-12.1.5.2, or 11.6.1-11.6.5.2 processes requests with JSON payload, an unusually large number of parameters can cause excessive CPU usage in the BIG-IP ASM bd process.

Affected (12)

Products: F5: Big Ip Advanced Web Application Firewall, Big Ip Application Security Manager

2 products

Big Ip Advanced Web Application Firewall

Big Ip Application Security Manager

Configuration A

12 vulnerable

Vulnerable Software	Affected Versions
F5 Big Ip Advanced Web Application Firewall	11.6.1 ≤ version ≤ 11.6.5
F5 Big Ip Advanced Web Application Firewall	12.1.0 ≤ version ≤ 12.1.5
F5 Big Ip Advanced Web Application Firewall	13.1.0 ≤ version < 13.1.3.5
F5 Big Ip Advanced Web Application Firewall	14.1.0 ≤ version < 14.1.3.1
F5 Big Ip Advanced Web Application Firewall	15.0.0 ≤ version < 15.1.1
F5 Big Ip Advanced Web Application Firewall	16.0.0 ≤ version < 16.0.1
F5 Big Ip Application Security Manager	11.6.1 ≤ version ≤ 11.6.5
F5 Big Ip Application Security Manager	12.1.0 ≤ version ≤ 12.1.5
F5 Big Ip Application Security Manager	13.1.0 ≤ version < 13.1.3.5
F5 Big Ip Application Security Manager	14.1.0 ≤ version < 14.1.3.1
F5 Big Ip Application Security Manager	15.0.0 ≤ version < 15.1.1
F5 Big Ip Application Security Manager	16.0.0 ≤ version < 16.0.1

References (2)

https://support.f5.com/csp/article/K58102101

Source: f5sirt@f5.com

Vendor Advisory

https://support.f5.com/csp/article/K58102101

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

Timeline

No history available yet.