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 |
|---|---|---|---|---|---|---|---|---|
| AlmaLinux 9.2 ESU | bind-dyndb-ldap | 11.9 | 7.5 | HIGH | Not Vulnerable | 2025-12-05 21:57:00 | ||
| AlmaLinux 9.2 ESU | dnsmasq | 2.85 | 7.5 | HIGH | Released | CLSA-2025:1745269163 | 2025-04-23 03:53:39 | |
| AlmaLinux 9.2 ESU | bind | 9.16.23 | 7.5 | HIGH | Released | CLSA-2024:1709547568 | 2024-03-04 08:42:21 | |
| AlmaLinux 9.2 ESU | unbound | 1.16.2 | 7.5 | HIGH | Released | CLSA-2024:1734532058 | 2024-12-18 22:57:02 | |
| AlmaLinux 9.2 ESU | dhcp | 4.4.2 | 7.5 | HIGH | Not Vulnerable | 2025-02-27 22:10:21 | ||
| CentOS 6 ELS | bind | 9.8.2 | 7.5 | HIGH | Released | CLSA-2024:1710437162 | 2024-03-25 09:51:19 | |
| CentOS 6 ELS | dhcp | 4.1.1 | 7.5 | HIGH | Not Vulnerable | 2024-10-11 10:45:33 | ||
| CentOS 7 ELS | unbound | 1.6.6 | 7.5 | HIGH | Released | CLSA-2024:1722529717 | 2024-08-15 03:45:32 | |
| CentOS 7 ELS | dnsmasq | 2.76 | 7.5 | HIGH | Not Vulnerable | 2025-12-23 02:04:44 | ||
| CentOS 7 ELS | bind | 9.11.4 | 7.5 | HIGH | Released | CLSA-2024:1709550046 | 2024-03-15 14:09:29 |