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Vulnerability Details : 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.
Publish Date : 2011-12-20 Last Update Date : 2017-08-29
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- CVSS Scores & Vulnerability Types

CVSS Score
7.8
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 399

- Related OVAL Definitions

Title Definition Id Class Family
DSA-2370-1 unbound -- several oval:org.mitre.oval:def:15048 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2011-4869

# Product Type Vendor Product Version Update Edition Language
1 Application Unbound Unbound * * * * Version Details Vulnerabilities
2 Application Unbound Unbound 0.0 * * * Version Details Vulnerabilities
3 Application Unbound Unbound 0.1 * * * Version Details Vulnerabilities
4 Application Unbound Unbound 0.2 * * * Version Details Vulnerabilities
5 Application Unbound Unbound 0.3 * * * Version Details Vulnerabilities
6 Application Unbound Unbound 0.4 * * * Version Details Vulnerabilities
7 Application Unbound Unbound 0.5 * * * Version Details Vulnerabilities
8 Application Unbound Unbound 0.6 * * * Version Details Vulnerabilities
9 Application Unbound Unbound 0.7 * * * Version Details Vulnerabilities
10 Application Unbound Unbound 0.7.1 * * * Version Details Vulnerabilities
11 Application Unbound Unbound 0.7.2 * * * Version Details Vulnerabilities
12 Application Unbound Unbound 0.8 * * * Version Details Vulnerabilities
13 Application Unbound Unbound 0.09 * * * Version Details Vulnerabilities
14 Application Unbound Unbound 0.10 * * * Version Details Vulnerabilities
15 Application Unbound Unbound 0.11 * * * Version Details Vulnerabilities
16 Application Unbound Unbound 1.0.0 * * * Version Details Vulnerabilities
17 Application Unbound Unbound 1.0.1 * * * Version Details Vulnerabilities
18 Application Unbound Unbound 1.0.2 * * * Version Details Vulnerabilities
19 Application Unbound Unbound 1.1.0 * * * Version Details Vulnerabilities
20 Application Unbound Unbound 1.1.1 * * * Version Details Vulnerabilities
21 Application Unbound Unbound 1.2.0 * * * Version Details Vulnerabilities
22 Application Unbound Unbound 1.2.1 * * * Version Details Vulnerabilities
23 Application Unbound Unbound 1.3.0 * * * Version Details Vulnerabilities
24 Application Unbound Unbound 1.3.1 * * * Version Details Vulnerabilities
25 Application Unbound Unbound 1.3.2 * * * Version Details Vulnerabilities
26 Application Unbound Unbound 1.3.3 * * * Version Details Vulnerabilities
27 Application Unbound Unbound 1.3.4 * * * Version Details Vulnerabilities
28 Application Unbound Unbound 1.4.0 * * * Version Details Vulnerabilities
29 Application Unbound Unbound 1.4.1 * * * Version Details Vulnerabilities
30 Application Unbound Unbound 1.4.2 * * * Version Details Vulnerabilities
31 Application Unbound Unbound 1.4.3 * * * Version Details Vulnerabilities
32 Application Unbound Unbound 1.4.4 * * * Version Details Vulnerabilities
33 Application Unbound Unbound 1.4.5 * * * Version Details Vulnerabilities
34 Application Unbound Unbound 1.4.6 * * * Version Details Vulnerabilities
35 Application Unbound Unbound 1.4.7 * * * Version Details Vulnerabilities
36 Application Unbound Unbound 1.4.8 * * * Version Details Vulnerabilities
37 Application Unbound Unbound 1.4.9 * * * Version Details Vulnerabilities
38 Application Unbound Unbound 1.4.10 * * * Version Details Vulnerabilities
39 Application Unbound Unbound 1.4.11 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Unbound Unbound 39

- References For CVE-2011-4869

http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071525.html
FEDORA FEDORA-2011-17282
http://osvdb.org/77910
OSVDB 77910
http://secunia.com/advisories/47326
SECUNIA 47326
http://www.debian.org/security/2011/dsa-2370
DEBIAN DSA-2370
http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071535.html
FEDORA FEDORA-2011-17337
http://unbound.nlnetlabs.nl/downloads/CVE-2011-4528.txt CONFIRM
http://www.kb.cert.org/vuls/id/209659
CERT-VN VU#209659
https://exchange.xforce.ibmcloud.com/vulnerabilities/71868
XF unbound-nsec3-dos(71868)

- Metasploit Modules Related To CVE-2011-4869

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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