CVE-2020-12662

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
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.
Overview
  • CVE ID
  • CVE-2020-12662
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-05-19T14:15:11
  • Last Modified Date
  • 2021-07-21T11:39:23
Weakness Enumerations
CWE URL
CWE-400 http://cwe.mitre.org/data/definitions/400.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:* 1 OR 1.10.1
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://nlnetlabs.nl/downloads/unbound/CVE-2020-12662_2020-12663.txt Vendor Advisory
http://www.nxnsattack.com Technical Description
http://www.openwall.com/lists/oss-security/2020/05/19/5 Mailing List Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F5NFROI2OMCZLYRTCNGHGO3TUD32LCIQ/ Mailing List Third Party Advisory
https://www.debian.org/security/2020/dsa-4694 Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YJ42N2HBZ3DXMSEC56SWIIOFQGOS5M7I/ Mailing List Third Party Advisory
https://www.synology.com/security/advisory/Synology_SA_20_12 Third Party Advisory
https://usn.ubuntu.com/4374-1/ Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20200702-0006/ Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:19.unbound.asc Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00017.html Mailing List Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-12662
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12662
History
Created Old Value New Value Data Type Notes
2022-05-10 07:01:51 Added to TrackCVE
2022-12-04 16:40:42 2020-05-19T14:15Z 2020-05-19T14:15:11 CVE Published Date updated
2022-12-04 16:40:42 2021-07-21T11:39:23 CVE Modified Date updated
2022-12-04 16:40:42 Analyzed Vulnerability Status updated