Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-22976

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
12/02/2021
Last modified:
12/07/2022

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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* 12.1.0 (including) 12.1.5 (including)
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* 13.1.0 (including) 13.1.3.6 (excluding)
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* 14.1.0 (including) 14.1.3.1 (excluding)
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* 15.1.0 (including) 15.1.2 (excluding)
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* 16.0.0 (including) 16.0.1.1 (excluding)
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* 12.1.0 (including) 12.1.5 (including)
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* 13.1.0 (including) 13.1.3.6 (excluding)
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* 14.1.0 (including) 14.1.3.1 (excluding)
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* 15.1.0 (including) 15.1.2 (excluding)
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* 16.0.0 (including) 16.0.1.1 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools