CVEvulnerability
CVE-2020-12662
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2020-05-19
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-400
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.
Affected configurations
• nlnetlabs unbound (< 1.10.1)
• debian debian linux 9.0
• debian debian linux 10.0
• opensuse leap 15.1
• opensuse leap 15.2
• canonical ubuntu linux 18.04
• canonical ubuntu linux 19.10
• canonical ubuntu linux 20.04
• fedoraproject fedora 31
• fedoraproject fedora 32
Related
Weakness · CWE (1)
- CWE-400 Uncontrolled Resource Consumption weakness
References
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html Mailing List, Third Party 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.debian.org/debian-lts-announce/2021/02/msg00017.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F5NFROI2OMCZLYRTCNGHGO3TUD32LCIQ/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YJ42N2HBZ3DXMSEC56SWIIOFQGOS5M7I/ lists.fedoraproject.org
- https://nlnetlabs.nl/downloads/unbound/CVE-2020-12662_2020-12663.txt Vendor Advisory
- https://security.FreeBSD.org/advisories/FreeBSD-SA-20:19.unbound.asc Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200702-0006/ Third Party Advisory
- https://usn.ubuntu.com/4374-1/ Third Party Advisory
- https://www.debian.org/security/2020/dsa-4694 Third Party Advisory
- https://www.synology.com/security/advisory/Synology_SA_20_12 Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html Mailing List, Third Party 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.debian.org/debian-lts-announce/2021/02/msg00017.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F5NFROI2OMCZLYRTCNGHGO3TUD32LCIQ/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YJ42N2HBZ3DXMSEC56SWIIOFQGOS5M7I/ lists.fedoraproject.org
- https://nlnetlabs.nl/downloads/unbound/CVE-2020-12662_2020-12663.txt Vendor Advisory
- https://security.FreeBSD.org/advisories/FreeBSD-SA-20:19.unbound.asc Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200702-0006/ Third Party Advisory
- https://usn.ubuntu.com/4374-1/ Third Party Advisory
- https://www.debian.org/security/2020/dsa-4694 Third Party Advisory
- https://www.synology.com/security/advisory/Synology_SA_20_12 Third Party Advisory