CVE-2021-25219

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

27/10/2021

Last modified:

07/11/2023

Description

In BIND 9.3.0 -> 9.11.35, 9.12.0 -> 9.16.21, and versions 9.9.3-S1 -> 9.11.35-S1 and 9.16.8-S1 -> 9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.18 of the BIND 9.17 development branch, exploitation of broken authoritative servers using a flaw in response processing can cause degradation in BIND resolver performance. The way the lame cache is currently designed makes it possible for its internal data structures to grow almost infinitely, which may cause significant delays in client query processing.

Impact

Vector 3.x

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

Base Score: 5.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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): Low

Base Score 3.x

5.30

Severity 3.x

MEDIUM

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:isc:bind:::::-:::*	9.3.0 (including)	9.11.36 (excluding)
cpe:2.3:a:isc:bind:::::-:::*	9.12.0 (including)	9.16.22 (excluding)
cpe:2.3:a:isc:bind:::::-:::*	9.17.0 (including)	9.17.19 (excluding)
cpe:2.3:a:isc:bind:9.9.3:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.9.12:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.9.13:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.10.5:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.10.7:s1:::supported_preview:::*
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:9.11.5:s6:::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:::*

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:::::-:::*	9.3.0 (including)	9.11.36 (excluding)
cpe:2.3:a:isc:bind:::::-:::*	9.12.0 (including)	9.16.22 (excluding)
cpe:2.3:a:isc:bind:::::-:::*	9.17.0 (including)	9.17.19 (excluding)
cpe:2.3:a:isc:bind:9.9.3:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.9.12:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.9.13:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.10.5:s1:::supported_preview:::*
cpe:2.3:a:isc:bind:9.10.7:s1:::supported_preview:::*
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:9.11.5:s6:::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:::*

CVE-2021-25219

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools