CVE-2012-0024: Maradns

High severity, CVSS 7.8. EPSS: 2.7% chance of exploitation in the next 30 days.

MaraDNS before 1.3.07.12 and 1.4.x before 1.4.08 computes hash values for DNS data without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted queries with the Recursion Desired (RD) bit set.

Affected products

• Maradns Maradns: before 1.3.07.12 (fixed in 1.3.07.12); from 1.4.0, before 1.4.08 (fixed in 1.4.08)

Published 2012-01-08. Last modified 2026-06-16.