CVE-2020-27718
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
F5 Big-ip Advanced Web Application Firewall
PublishedDec 24, 2020
First seenDec 24, 2020
How to fix
Update
- f5 big-ip_advanced_web_application_firewall13.1.3.5, 14.1.3.1, 15.1.1, 16.0.1 or later
- f5 big-ip_application_security_manager13.1.3.5, 14.1.3.1, 15.1.1, 16.0.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| f5 big-ip_advanced_web_application_firewall | 11.6.1 ≤ v ≤ 11.6.5, 12.1.0 ≤ v ≤ 12.1.5, 13.1.0 ≤ v < 13.1.3.5, 14.1.0 ≤ v < 14.1.3.1, 15.0.0 ≤ v < 15.1.1, 16.0.0 ≤ v < 16.0.1 | 13.1.3.5, 14.1.3.1, 15.1.1, 16.0.1 |
| f5 big-ip_application_security_manager | 11.6.1 ≤ v ≤ 11.6.5, 12.1.0 ≤ v ≤ 12.1.5, 13.1.0 ≤ v < 13.1.3.5, 14.1.0 ≤ v < 14.1.3.1, 15.0.0 ≤ v < 15.1.1, 16.0.0 ≤ v < 16.0.1 | 13.1.3.5, 14.1.3.1, 15.1.1, 16.0.1 |
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