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Resource Management Errors Affecting unbound package, versions <1.4.14-1

medium

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 1.5% (87th percentile)
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NVD
7.5 high

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  • Snyk ID SNYK-DEBIAN10-UNBOUND-320304
  • published 20 Dec 2011
  • disclosed 20 Dec 2011
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Introduced: 20 Dec 2011

CVE-2011-4869 Open this link in a new tab
CWE-399 Open this link in a new tab

How to fix?

Upgrade Debian:10 unbound to version 1.4.14-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream unbound package and not the unbound package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

validator/val_nsec3.c in Unbound before 1.4.13p2 does not properly perform proof processing for NSEC3-signed zones, which allows remote DNS servers to cause a denial of service (daemon crash) via a malformed response that lacks expected NSEC3 records, a different vulnerability than CVE-2011-4528.