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CVE-2011-4869

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Date: December 20, 2011

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.

Language: C

Severity Score

Related Resources (12)

http://osvdb.org/77910
http://unbound.nlnetlabs.nl/downloads/CVE-2011-4528.txt
http://www.debian.org/security/2011/dsa-2370
http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071525.html
http://www.kb.cert.org/vuls/id/209659
https://nvd.nist.gov/vuln/detail/CVE-2011-4869
http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071535.html
https://people.canonical.com/~ubuntu-security/cve/CVE-2011-4869
https://security-tracker.debian.org/tracker/CVE-2011-4869
http://secunia.com/advisories/47326
https://exchange.xforce.ibmcloud.com/vulnerabilities/71868
https://www.mend.io/vulnerability-database/CVE-2011-4869

Severity Score

Weakness Type (CWE)

Resource Management Errors

CWE-399

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): COMPLETE
Additional information:

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