CVE-2020-12662
First published: Tue May 19 2020(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| 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 | |
| redhat/unbound | <1.10.1 | 1.10.1 |
| ubuntu/unbound | <1.6.7-1ubuntu2.3 | 1.6.7-1ubuntu2.3 |
| ubuntu/unbound | <1.9.0-2ubuntu1.1 | 1.9.0-2ubuntu1.1 |
| ubuntu/unbound | <1.9.4-2ubuntu1.1 | 1.9.4-2ubuntu1.1 |
| ubuntu/unbound | <1.10.1-1 | 1.10.1-1 |
| debian/unbound | 1.13.1-1+deb11u2 1.17.1-2+deb12u2 1.20.0-1 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html
- http://www.nxnsattack.com
- http://www.openwall.com/lists/oss-security/2020/05/19/5
- https://lists.debian.org/debian-lts-announce/2021/02/msg00017.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F5NFROI2OMCZLYRTCNGHGO3TUD32LCIQ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YJ42N2HBZ3DXMSEC56SWIIOFQGOS5M7I/
- https://nlnetlabs.nl/downloads/unbound/CVE-2020-12662_2020-12663.txt
- https://security.FreeBSD.org/advisories/FreeBSD-SA-20:19.unbound.asc
- https://security.netapp.com/advisory/ntap-20200702-0006/
- https://usn.ubuntu.com/4374-1/
- https://www.debian.org/security/2020/dsa-4694
- https://www.synology.com/security/advisory/Synology_SA_20_12
- https://launchpad.net/bugs/cve/CVE-2020-12662
- https://nlnetlabs.nl/downloads/unbound/patch_cve_2020-12662_2020-12663.diff
- https://security-tracker.debian.org/tracker/CVE-2020-12662
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F5NFROI2OMCZLYRTCNGHGO3TUD32LCIQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YJ42N2HBZ3DXMSEC56SWIIOFQGOS5M7I/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1837598
- https://github.com/NLnetLabs/unbound/commit/ba0f382eee814e56900a535778d13206b86b6d49
- http://www.nxnsattack.com/
- https://access.redhat.com/errata/RHSA-2020:2414
- https://access.redhat.com/errata/RHSA-2020:2416
- https://access.redhat.com/errata/RHSA-2020:2418
- https://access.redhat.com/errata/RHSA-2020:2419
- https://access.redhat.com/security/cve/cve-2020-12662
- https://access.redhat.com/errata/RHSA-2020:2640
- https://access.redhat.com/errata/RHSA-2020:4181
- https://bugzilla.redhat.com/show_bug.cgi?id=1837597
- https://www.openwall.com/lists/oss-security/2020/05/19/5
- https://ubuntu.com/security/notices/USN-4374-1
- https://www.cve.org/CVERecord?id=CVE-2020-12662
- https://nvd.nist.gov/vuln/detail/CVE-2020-12662
- https://ubuntu.com/security/CVE-2020-12662
Frequently Asked Questions
What is the CVE ID of this vulnerability?
The CVE ID of this vulnerability is CVE-2020-12662.
What is the severity level of CVE-2020-12662?
The severity level of CVE-2020-12662 is high.
What is the affected software for CVE-2020-12662?
The affected software for CVE-2020-12662 includes Unbound versions 1.6.7-1ubuntu2.3, 1.9.0-2ubuntu1.1, 1.10.1-1, 1.9.4-2ubuntu1.1, and 1.10.1.
What is the remedy for CVE-2020-12662?
The remedy for CVE-2020-12662 is to update Unbound to version 1.10.1 or apply the specific versions mentioned for each affected software.
Where can I find more information about CVE-2020-12662?
More information about CVE-2020-12662 can be found at the following references: [link1](http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html), [link2](http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html), and [link3](http://www.nxnsattack.com).
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