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

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CVE-2018-5745

Severity CVSS v4.0:
Pending analysis
Type:
CWE-327 Use of a Broken or Risky Cryptographic Algorithm
Publication date:
09/10/2019
Last modified:
06/11/2019

Description

"managed-keys" is a feature which allows a BIND resolver to automatically maintain the keys used by trust anchors which operators configure for use in DNSSEC validation. Due to an error in the managed-keys feature it is possible for a BIND server which uses managed-keys to exit due to an assertion failure if, during key rollover, a trust anchor's keys are replaced with keys which use an unsupported algorithm. Versions affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.9.3-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5745.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 4.90 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x
4.90
Severity 3.x
MEDIUM
Vector 2.0
AV:N/AC:M/Au:S/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 3.50 LOW
Vector: AV:N/AC:M/Au:S/C:N/I:N/A:P

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

Base Score 2.0
3.50
Severity 2.0
LOW

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* 9.9.0 (including) 9.10.7 (including)
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* 9.11.0 (including) 9.11.4 (including)
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* 9.12.0 (including) 9.12.2 (including)
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* 9.13.0 (including) 9.13.6 (including)
cpe:2.3:a:isc:bind:9.9.3:s1:*:*:*:supported_preview:*:*
cpe:2.3:a:isc:bind:9.10.7:-:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.10.8:p1:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.11.5:-:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.11.5:p1:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.11.5:s3:*:*:*:supported_preview:*:*
cpe:2.3:a:isc:bind:9.12.3:-:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.12.3:p1:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools