CVE-2020-8625

Severity CVSS v4.0:

Pending analysis

Type:

CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Publication date:

17/02/2021

Last modified:

07/11/2023

Description

BIND servers are vulnerable if they are running an affected version and are configured to use GSS-TSIG features. In a configuration which uses BIND's default settings the vulnerable code path is not exposed, but a server can be rendered vulnerable by explicitly setting valid values for the tkey-gssapi-keytab or tkey-gssapi-credentialconfiguration options. Although the default configuration is not vulnerable, GSS-TSIG is frequently used in networks where BIND is integrated with Samba, as well as in mixed-server environments that combine BIND servers with Active Directory domain controllers. The most likely outcome of a successful exploitation of the vulnerability is a crash of the named process. However, remote code execution, while unproven, is theoretically possible. Affects: BIND 9.5.0 -> 9.11.27, 9.12.0 -> 9.16.11, and versions BIND 9.11.3-S1 -> 9.11.27-S1 and 9.16.8-S1 -> 9.16.11-S1 of BIND Supported Preview Edition. Also release versions 9.17.0 -> 9.17.1 of the BIND 9.17 development branch

Impact

Vector 3.x

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

Base Score: 8.10 HIGH
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x

8.10

Severity 3.x

HIGH

Vector 2.0

AV:N/AC:M/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

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

Base Score 2.0

6.80

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:isc:bind::::::::	9.5.0 (including)	9.11.27 (including)
cpe:2.3:a:isc:bind::::::::	9.12.0 (including)	9.16.11 (including)
cpe:2.3:a:isc:bind:9.11.3:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.11.5:s3:::supported_preview:::*
cpe:2.3:a:isc:bind:9.11.5:s5:::supported_preview:::*
cpe:2.3:a:isc:bind:9.11.6:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.11.7:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.11.8:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.11.21:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.11.27:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.16.8:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.16.11:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.17.0:::::::*
cpe:2.3:a:isc:bind:9.17.1:::::::*
cpe:2.3:o:debian:debian_linux:9.0:::::::*

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

CPE	From	Up to
cpe:2.3:a:isc:bind::::::::	9.5.0 (including)	9.11.27 (including)
cpe:2.3:a:isc:bind::::::::	9.12.0 (including)	9.16.11 (including)
cpe:2.3:a:isc:bind:9.11.3:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.11.5:s3:::supported_preview:::*
cpe:2.3:a:isc:bind:9.11.5:s5:::supported_preview:::*
cpe:2.3:a:isc:bind:9.11.6:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.11.7:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.11.8:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.11.21:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.11.27:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.16.8:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.16.11:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.17.0:::::::*
cpe:2.3:a:isc:bind:9.17.1:::::::*
cpe:2.3:o:debian:debian_linux:9.0:::::::*

CVE-2020-8625

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools