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

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CVE-2020-27720

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

Description

On BIG-IP LTM/CGNAT version 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.3, and 13.1.0-13.1.3.5, when processing NAT66 traffic with Port Block Allocation (PBA) mode and SP-DAG enabled, and dag-ipv6-prefix-len configured with a value less than the default of 128, an undisclosed traffic pattern may cause the Traffic Management Microkernel (TMM) to restart.

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_carrier-grade_nat:*:*:*:*:*:*:*:* 13.1.0 (including) 13.1.3 (including)
cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:* 14.1.0 (including) 14.1.3.1 (excluding)
cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:* 15.1.0 (including) 15.1.1 (excluding)
cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:* 16.0.0 (including) 16.0.1 (excluding)
cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* 13.1.0 (including) 13.1.3 (including)
cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* 14.1.0 (including) 14.1.3.1 (excluding)
cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* 15.1.0 (including) 15.1.1 (excluding)
cpe:2.3:a:f5:big-ip_local_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