CVE-2011-4869

high

Description

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.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/71868

http://www.kb.cert.org/vuls/id/209659

http://www.debian.org/security/2011/dsa-2370

http://unbound.nlnetlabs.nl/downloads/CVE-2011-4528.txt

http://secunia.com/advisories/47326

http://osvdb.org/77910

http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071535.html

http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071525.html

Details

Source: Mitre, NVD

Published: 2011-12-20

Updated: 2017-08-29

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High