CVEvulnerability

CVE-2021-22976

7.5 HIGH Published 2021-02-12 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-02-12
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P

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.

Affected configurations

• f5 big-ip advanced web application firewall (>= 12.1.0 <= 12.1.5) • f5 big-ip advanced web application firewall (>= 13.1.0 < 13.1.3.6) • f5 big-ip advanced web application firewall (>= 14.1.0 < 14.1.3.1) • f5 big-ip advanced web application firewall (>= 15.1.0 < 15.1.2) • f5 big-ip advanced web application firewall (>= 16.0.0 < 16.0.1.1) • f5 big-ip application security manager (>= 12.1.0 <= 12.1.5) • f5 big-ip application security manager (>= 13.1.0 < 13.1.3.6) • f5 big-ip application security manager (>= 14.1.0 < 14.1.3.1) • f5 big-ip application security manager (>= 15.1.0 < 15.1.2) • f5 big-ip application security manager (>= 16.0.0 < 16.0.1.1)

References