CVE-2021-22976
High
Description
On BIG-IP Advanced WAF and ASM version 16.0.x before 16.0.1.1, 15.1.x before 15.1.2, 14.1.x before 14.1.3.1, 13.1.x before 13.1.3.6, and all 12.1.x versions, when the BIG-IP ASM system processes WebSocket requests with JSON payloads, an unusually large number of parameters can cause excessive CPU usage in the BIG-IP ASM bd process. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.
SeverityHigh
CVSS7.5
Exploit probability—
Product
F5 Big-ip Advanced Web Application Firewall
PublishedFeb 12, 2021
First seenFeb 12, 2021
How to fix
Update
- f5 big-ip_advanced_web_application_firewall13.1.3.6, 14.1.3.1, 15.1.2, 16.0.1.1 or later
- f5 big-ip_application_security_manager13.1.3.6, 14.1.3.1, 15.1.2, 16.0.1.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| f5 big-ip_advanced_web_application_firewall | 12.1.0 ≤ v ≤ 12.1.5, 13.1.0 ≤ v < 13.1.3.6, 14.1.0 ≤ v < 14.1.3.1, 15.1.0 ≤ v < 15.1.2, 16.0.0 ≤ v < 16.0.1.1 | 13.1.3.6, 14.1.3.1, 15.1.2, 16.0.1.1 |
| f5 big-ip_application_security_manager | 12.1.0 ≤ v ≤ 12.1.5, 13.1.0 ≤ v < 13.1.3.6, 14.1.0 ≤ v < 14.1.3.1, 15.1.0 ≤ v < 15.1.2, 16.0.0 ≤ v < 16.0.1.1 | 13.1.3.6, 14.1.3.1, 15.1.2, 16.0.1.1 |
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