CVE-2021-22976

Published on: 02/12/2021 12:00:00 AM UTC

Last Modified on: 03/23/2021 11:29:08 PM UTC

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

Certain versions of Big-ip Advanced Web Application Firewall from F5 contain the following vulnerability:

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.

  • CVE-2021-22976 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as HIGH severity.

CVSS3 Score: 7.5 - HIGH

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
NETWORK LOW NONE NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED NONE NONE HIGH

CVSS2 Score: 5 - MEDIUM

Access
Vector
Access
Complexity
Authentication
NETWORK LOW NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
NONE NONE PARTIAL

CVE References

Description Tags Link
No Description Provided Vendor Advisory
support.f5.com
text/html
URL Logo MISC support.f5.com/csp/article/K88230177

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationF5Big-ip Advanced Web Application FirewallAllAllAllAll
ApplicationF5Big-ip Advanced Web Application FirewallAllAllAllAll
ApplicationF5Big-ip Advanced Web Application FirewallAllAllAllAll
ApplicationF5Big-ip Application Security ManagerAllAllAllAll
ApplicationF5Big-ip Application Security ManagerAllAllAllAll
ApplicationF5Big-ip Application Security ManagerAllAllAllAll
  • cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*:
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