CVE-2012-0024

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.

Published: 2012-01-08 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-0024 is rated Moderate Risk (56.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.76%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2012-0024

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 0.66% 0.76% +0.10%
2 2025-03-29 0.76% 0.66% -0.10%
3 2025-03-17 — 0.76% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-0024

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 2.0 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 6.9 [email protected]

Weakness enumeration for CVE-2012-0024

OS Trackers for CVE-2012-0024

vendor priority summary link
debian not yet assigned CVE-2012-0024 not yet assigned priority: Debian including 1 source packages (maradns), 1 status rows across 1 suites (bullseye): resolved 1. https://security-tracker.debian.org/tracker/CVE-2012-0024
gentoo normal CVE-2012-0024: 1 GLSA(s) (201202-03), 1 atom(s) (net-dns/maradns); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2012-0024
ubuntu medium CVE-2012-0024 medium priority: Ubuntu including 1 source packages (maradns), 10 status rows across 10 suites (hardy, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, upstream): ignored 5, not-affected 4, released 1. https://ubuntu.com/security/CVE-2012-0024

Affected software / configurations for CVE-2012-0024

Vendor Product Version Raw CPE
maradns maradns < 1.3.07.12 cpe:2.3:a:maradns:maradns:*:*:*:*:*:*:*:*
maradns maradns >= 1.4.0, < 1.4.08 cpe:2.3:a:maradns:maradns:*:*:*:*:*:*:*:*

References for CVE-2012-0024

URL Tags
http://openwall.com/lists/oss-security/2012/01/03/13 Mailing List Third Party Advisory
http://openwall.com/lists/oss-security/2012/01/03/6 Mailing List Third Party Advisory
http://samiam.org/blog/20111229.html Patch Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=771428 Issue Tracking Third Party Advisory
cvelogic Threat Intelligence