CVE Vulnerability

CVE-2021-40083

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).

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://gitlab.nic.cz/knot/knot-resolver/-/merge_requests/1169 Patch Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:nic:knot_resolver:*:*:*:*:*:*:*:*
Information

Published : 2021-08-25 01:15

Updated : 2021-08-30 07:29

NVD link : CVE-2021-40083

Mitre link : CVE-2021-40083

Products Affected
No products.
CWE
CWE-617