CVE-2021-22976

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

En BIG-IP Advanced WAF y ASM versiones 16.0.x anteriores a 16.0.1.1, versiones 15.1.x anteriores 15.1.2, versiones 14.1.x anteriores a 14.1.3.1, versiones 13.1.x anteriores a 13.1.3.6, y todas las versiones 12.1.x, cuando el sistema BIG-IP ASM procesa las peticiones de WebSocket con cargas útiles JSON, una cantidad inusualmente grande de parámetros puede causar un uso excesivo de la CPU en el proceso bd de BIG-IP ASM. Nota: No son evaluadas las versiones de software que han alcanzado End of Software Development (EoSD)

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-06 CVE Reserved
2021-02-12 CVE Published
2023-10-29 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://support.f5.com/csp/article/K88230177	2022-07-12

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
F5 Search vendor "F5"		Big-ip Advanced Web Application Firewall Search vendor "F5" for product "Big-ip Advanced Web Application Firewall"				>= 12.1.0 <= 12.1.5 Search vendor "F5" for product "Big-ip Advanced Web Application Firewall" and version " >= 12.1.0 <= 12.1.5"		-		Affected
F5 Search vendor "F5"		Big-ip Advanced Web Application Firewall Search vendor "F5" for product "Big-ip Advanced Web Application Firewall"				>= 13.1.0 < 13.1.3.6 Search vendor "F5" for product "Big-ip Advanced Web Application Firewall" and version " >= 13.1.0 < 13.1.3.6"		-		Affected
F5 Search vendor "F5"		Big-ip Advanced Web Application Firewall Search vendor "F5" for product "Big-ip Advanced Web Application Firewall"				>= 14.1.0 < 14.1.3.1 Search vendor "F5" for product "Big-ip Advanced Web Application Firewall" and version " >= 14.1.0 < 14.1.3.1"		-		Affected
F5 Search vendor "F5"		Big-ip Advanced Web Application Firewall Search vendor "F5" for product "Big-ip Advanced Web Application Firewall"				>= 15.1.0 < 15.1.2 Search vendor "F5" for product "Big-ip Advanced Web Application Firewall" and version " >= 15.1.0 < 15.1.2"		-		Affected
F5 Search vendor "F5"		Big-ip Advanced Web Application Firewall Search vendor "F5" for product "Big-ip Advanced Web Application Firewall"				>= 16.0.0 < 16.0.1.1 Search vendor "F5" for product "Big-ip Advanced Web Application Firewall" and version " >= 16.0.0 < 16.0.1.1"		-		Affected
F5 Search vendor "F5"		Big-ip Application Security Manager Search vendor "F5" for product "Big-ip Application Security Manager"				>= 12.1.0 <= 12.1.5 Search vendor "F5" for product "Big-ip Application Security Manager" and version " >= 12.1.0 <= 12.1.5"		-		Affected
F5 Search vendor "F5"		Big-ip Application Security Manager Search vendor "F5" for product "Big-ip Application Security Manager"				>= 13.1.0 < 13.1.3.6 Search vendor "F5" for product "Big-ip Application Security Manager" and version " >= 13.1.0 < 13.1.3.6"		-		Affected
F5 Search vendor "F5"		Big-ip Application Security Manager Search vendor "F5" for product "Big-ip Application Security Manager"				>= 14.1.0 < 14.1.3.1 Search vendor "F5" for product "Big-ip Application Security Manager" and version " >= 14.1.0 < 14.1.3.1"		-		Affected
F5 Search vendor "F5"		Big-ip Application Security Manager Search vendor "F5" for product "Big-ip Application Security Manager"				>= 15.1.0 < 15.1.2 Search vendor "F5" for product "Big-ip Application Security Manager" and version " >= 15.1.0 < 15.1.2"		-		Affected
F5 Search vendor "F5"		Big-ip Application Security Manager Search vendor "F5" for product "Big-ip Application Security Manager"				>= 16.0.0 < 16.0.1.1 Search vendor "F5" for product "Big-ip Application Security Manager" and version " >= 16.0.0 < 16.0.1.1"		-		Affected