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    CVE-2011-4869

    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.

    Published:Dec 20, 2011
    Last Modified:Apr 11, 2025
    EPS:Dec 20, 2011
    EPSS Score:0.01354
    CVSS Score:7.8

    Affected Products

    Vendor
    Unbound
    Product
    Unbound

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    References

    http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071525.html
    http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071535.html
    http://osvdb.org/77910
    http://secunia.com/advisories/47326
    http://unbound.nlnetlabs.nl/downloads/CVE-2011-4528.txt
    http://www.debian.org/security/2011/dsa-2370
    http://www.kb.cert.org/vuls/id/209659
    https://exchange.xforce.ibmcloud.com/vulnerabilities/71868
    http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071525.html
    http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071535.html
    http://osvdb.org/77910
    http://secunia.com/advisories/47326
    http://unbound.nlnetlabs.nl/downloads/CVE-2011-4528.txt
    http://www.debian.org/security/2011/dsa-2370
    http://www.kb.cert.org/vuls/id/209659
    https://exchange.xforce.ibmcloud.com/vulnerabilities/71868

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High