CVE-2012-0024

Severity: high (CVSS 7.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-01-08 · updated 2026-06-16
Weakness: CWE-400

Description

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: before 1.3.07.12; from 1.4.0 before 1.4.08 — fixed in 1.3.07.12, 1.4.08

How to fix

Upgrade to a fixed version: MaraDNS 1.3.07.12, 1.4.08. Check the vendor advisory for mitigations.

References

http://openwall.com/lists/oss-security/2012/01/03/13
http://openwall.com/lists/oss-security/2012/01/03/6
http://samiam.org/blog/20111229.html
https://bugzilla.redhat.com/show_bug.cgi?id=771428
http://openwall.com/lists/oss-security/2012/01/03/13
http://openwall.com/lists/oss-security/2012/01/03/6
http://samiam.org/blog/20111229.html
https://bugzilla.redhat.com/show_bug.cgi?id=771428

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