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 |
|---|---|---|---|---|---|---|---|---|
| CentOS 7 ELS | dhcp | 4.2.5 | 7.5 | HIGH | Already Fixed | 2025-11-18 16:09:10 | ||
| CentOS 8.4 ELS | bind | 9.11.26 | 7.5 | HIGH | Released | CLSA-2024:1709550262 | 2024-03-04 08:42:22 | |
| CentOS 8.4 ELS | dhcp | 4.3.6-44 | 7.5 | HIGH | Not Vulnerable | 2024-10-11 10:45:33 | ||
| CentOS 8.5 ELS | dhcp | 4.3.6-45 | 7.5 | HIGH | Not Vulnerable | 2024-10-11 10:45:33 | ||
| CentOS 8.5 ELS | bind | 9.11.26 | 7.5 | HIGH | Released | CLSA-2024:1709561259 | 2024-03-04 10:08:53 | |
| CentOS Stream 8 ELS | bind | 9.11.36 | 7.5 | HIGH | Released | CLSA-2024:1730480495 | 2024-11-01 14:31:00 | |
| CentOS Stream 8 ELS | dhcp | 4.3.6 | 7.5 | HIGH | Not Vulnerable | 2024-10-11 10:45:33 | ||
| CloudLinux 6 ELS | dhcp | 4.1.1 | 7.5 | HIGH | Not Vulnerable | 2024-10-11 10:45:32 | ||
| CloudLinux 6 ELS | bind | 9.8.2 | 7.5 | HIGH | Released | CLSA-2024:1710439896 | 2024-03-25 09:51:20 | |
| CloudLinux 7 ELS | dhcp | 4.2.5 | 7.5 | HIGH | Already Fixed | 2025-12-23 01:56:26 |