CVE-2011-5056

CVE-2011-5056 is a low-severity vulnerability in Maradns with a CVSS 2.0 base score of 2.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Description

The authoritative server in MaraDNS through 2.0.04 computes hash values for DNS data without restricting the ability to trigger hash collisions predictably, which might allow local users to cause a denial of service (CPU consumption) via crafted records in zone files, a different vulnerability than CVE-2012-0024.

Frequently asked questions

What is CVE-2011-5056?
The authoritative server in MaraDNS through 2.0.04 computes hash values for DNS data without restricting the ability to trigger hash collisions predictably, which might allow local users to cause a denial of service (CPU consumption) via crafted records in zone files, a different vulnerability than CVE-2012-0024.
How severe is CVE-2011-5056?
CVE-2011-5056 has a CVSS 2.0 base score of 2.1, rated low severity.
Is CVE-2011-5056 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-5056?
CVE-2011-5056 affects Maradns. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-5056?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-5056 published?
CVE-2011-5056 was published on 2012-01-08 and last updated on 2026-06-16.

References

Affected products (1)

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