Executive Summary

Informations
Name CVE-2020-12662 First vendor Publication 2020-05-19
Vendor Cve Last vendor Modification 2020-07-08

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Unbound before 1.10.1 has Insufficient Control of Network Message Volume, aka an "NXNSAttack" issue. This is triggered by random subdomains in the NSDNAME in NS records.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12662

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-674 Uncontrolled Recursion

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 151

Sources (Detail)

Source Url
CONFIRM https://nlnetlabs.nl/downloads/unbound/CVE-2020-12662_2020-12663.txt
https://security.netapp.com/advisory/ntap-20200702-0006/
https://www.synology.com/security/advisory/Synology_SA_20_12
DEBIAN https://www.debian.org/security/2020/dsa-4694
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
FREEBSD https://security.FreeBSD.org/advisories/FreeBSD-SA-20:19.unbound.asc
MISC http://www.nxnsattack.com
MLIST http://www.openwall.com/lists/oss-security/2020/05/19/5
SUSE http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html
UBUNTU https://usn.ubuntu.com/4374-1/

Alert History

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Date Informations
2020-07-09 05:22:44
  • Multiple Updates
2020-07-02 17:22:44
  • Multiple Updates
2020-06-30 09:22:42
  • Multiple Updates
2020-06-02 05:22:41
  • Multiple Updates
2020-05-29 01:26:14
  • Multiple Updates
2020-05-29 01:25:11
  • Multiple Updates
2020-05-28 17:22:47
  • Multiple Updates
2020-05-28 09:22:48
  • Multiple Updates
2020-05-27 17:22:50
  • Multiple Updates
2020-05-24 12:26:00
  • Multiple Updates
2020-05-23 02:35:46
  • First insertion