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

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CVE-2021-23000

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
31/03/2021
Last modified:
05/04/2021

Description

On BIG-IP versions 13.1.3.4-13.1.3.6 and 12.1.5.2, if the tmm.http.rfc.enforcement BigDB key is enabled in a BIG-IP system, or the Bad host header value is checked in the AFM HTTP security profile associated with a virtual server, in rare instances, a specific sequence of malicious requests may cause TMM to restart. 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:M/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 4.30 MEDIUM
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

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

Base Score 2.0
4.30
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* 13.1.3.4 (including) 13.1.3.6 (excluding)
cpe:2.3:a:f5:big-ip_access_policy_manager:12.1.5.2:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* 13.1.3.4 (including) 13.1.3.6 (excluding)
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:12.1.5.2:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* 13.1.3.4 (including) 13.1.3.6 (excluding)
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:12.1.5.2:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* 13.1.3.4 (including) 13.1.3.6 (excluding)
cpe:2.3:a:f5:big-ip_analytics:12.1.5.2:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* 13.1.3.4 (including) 13.1.3.6 (excluding)
cpe:2.3:a:f5:big-ip_application_acceleration_manager:12.1.5.2:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* 13.1.3.4 (including) 13.1.3.6 (excluding)
cpe:2.3:a:f5:big-ip_application_security_manager:12.1.5.2:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* 13.1.3.4 (including) 13.1.3.6 (excluding)
cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:12.1.5.2:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* 13.1.3.4 (including) 13.1.3.6 (excluding)

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


References to Advisories, Solutions, and Tools