Updated: 2026-02-27 00:29:01.066237
Description:
Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | 0.0 | |
| CVSS Version 3.x | HIGH | 7.5 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| CloudLinux 7 ELS | bind | 9.11.4 | 7.5 | HIGH | Already Fixed | 2024-10-02 14:26:03 | ||
| CloudLinux 7 ELS | unbound | 1.6.6 | 7.5 | HIGH | Released | CLSA-2025:1765309238 | 2026-01-22 05:30:16 | |
| Debian 10 ELS | bind9 | 9.11.5 | 7.5 | HIGH | Already Fixed | 2025-10-21 18:58:40 | ||
| Oracle Linux 6 ELS | dhcp | 4.1.1 | 7.5 | HIGH | Not Vulnerable | 2024-10-11 10:45:33 | ||
| Oracle Linux 6 ELS | bind | 9.8.2 | 7.5 | HIGH | Released | CLSA-2024:1710437080 | 2024-03-14 14:09:21 | |
| Oracle Linux 7 ELS | unbound | 1.6.6 | 7.5 | HIGH | Released | CLSA-2025:1765282338 | 2025-12-09 20:55:37 | |
| Oracle Linux 7 ELS | bind | 9.11.4 | 7.5 | HIGH | Already Fixed | 2025-02-14 23:51:12 | ||
| Oracle Linux 7 ELS | dhcp | 4.2.5 | 7.5 | HIGH | Already Fixed | 2026-01-12 19:23:23 | ||
| RHEL 7 ELS | unbound | 1.6.6 | 7.5 | HIGH | Released | CLSA-2025:1756230743 | 2025-08-28 09:20:07 | |
| RHEL 7 ELS | dhcp | 4.2.5 | 7.5 | HIGH | Already Fixed | 2025-08-20 07:18:09 |