Updated: 2025-08-20 01:46:28.411752
Description:
If a server hosts a zone containing a "KEY" Resource Record, or a resolver DNSSEC-validates a "KEY" Resource Record from a DNSSEC-signed domain in cache, a client can exhaust resolver CPU resources by sending a stream of SIG(0) signed requests. This issue affects BIND 9 versions 9.0.0 through 9.11.37, 9.16.0 through 9.16.50, 9.18.0 through 9.18.27, 9.19.0 through 9.19.24, 9.9.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.49-S1, and 9.18.11-S1 through 9.18.27-S1.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | NONE | 0.0 |
| CVSS Version 3.x | HIGH | 7.5 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| Oracle Linux 7 ELS | bind | 9.11.4 | 7.5 | HIGH | Already Fixed | 2024-12-09 11:55:23 | ||
| RHEL 7 ELS | bind | 9.11.4 | 7.5 | HIGH | Released | CLSA-2025:1755512368 | 2025-08-19 06:33:24 | |
| Ubuntu 16.04 ELS | bind9 | 9.10.3 | 7.5 | HIGH | Released | CLSA-2024:1725471213 | 2024-09-04 14:23:03 | |
| Ubuntu 18.04 ELS | bind9 | 9.11.3 | 7.5 | HIGH | Released | CLSA-2024:1725993824 | 2024-09-10 17:26:11 |