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

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CVE-2020-27721

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
24/12/2020
Last modified:
28/12/2020

Description

In versions 16.0.0-16.0.0.1, 15.1.0-15.1.1, 14.1.0-14.1.3, 13.1.0-13.1.3.5, 12.1.0-12.1.5.2, and 11.6.1-11.6.5.2, in a BIG-IP DNS / BIG-IP LTM GSLB deployment, under certain circumstances, the BIG-IP DNS system may stop using a BIG-IP LTM virtual server for DNS response.

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_domain_name_system:*:*:*:*:*:*:*:* 11.6.1 (including) 11.6.5 (including)
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* 12.1.0 (including) 12.1.5 (including)
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* 13.1.0 (including) 13.1.3 (including)
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* 14.1.0 (including) 14.1.3.1 (excluding)
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* 15.0.0 (including) 15.1.2 (excluding)
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* 16.0.0 (including) 16.0.1 (excluding)
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* 11.6.1 (including) 11.6.5 (including)
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* 12.1.0 (including) 12.1.5 (including)
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* 13.1.0 (including) 13.1.3 (including)
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* 14.1.0 (including) 14.1.3.1 (excluding)
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* 15.0.0 (including) 15.1.2 (excluding)
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* 16.0.0 (including) 16.0.1 (excluding)

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


References to Advisories, Solutions, and Tools