CVE-2021-40083 Information

Description

Knot Resolver before 5.3.2 is prone to an assertion failure triggerable by a remote attacker in an edge case (NSEC3 with too many iterations used for a positive wildcard proof).

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://gitlab.nic.cz/knot/knot-resolver/-/merge_requests/1169

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5