Resource exhaustion via malformed DNSKEY handling
Querying for records within a specially crafted zone containing certain malformed DNSKEY records can lead to CPU exhaustion.
This issue affects BIND 9 versions 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.
Problem Types
| Type | CWE ID | Description |
|---|
| CWE | CWE-405 | CWE-405 Asymmetric Resource Consumption (Amplification) |
Type: CWE
Description: CWE-405 Asymmetric Resource Consumption (Amplification)
Metrics
| Version | Base score | Base severity | Vector |
|---|
| 3.1 | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Impacts
| CAPEC ID | Description |
|---|
| N/A | An attacker could overwhelm the server, significantly impacting performance and leading to denial of service for legitimate clients. |
CAPEC ID: N/A
Description: An attacker could overwhelm the server, significantly impacting performance and leading to denial of service for legitimate clients.