CVE-2020-12663
First published: Tue May 19 2020(Updated: )
Unbound before 1.10.1 has an infinite loop via malformed DNS answers received from upstream servers.
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 | |
| 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.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://usn.ubuntu.com/4374-1/
- https://www.debian.org/security/2020/dsa-4694
- https://launchpad.net/bugs/cve/CVE-2020-12663
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1837609
- https://github.com/NLnetLabs/unbound/commit/ba0f382eee814e56900a535778d13206b86b6d49
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1837604#c2
- https://github.com/NLnetLabs/unbound/commit/
- https://github.com/NLnetLabs/unbound/issues/243#issuecomment-637298509
- https://access.redhat.com/security/cve/CVE-2020-12662
- 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-2020-12663
- https://access.redhat.com/errata/RHSA-2020:2640
- https://access.redhat.com/errata/RHSA-2020:4181
- https://bugzilla.redhat.com/show_bug.cgi?id=1837604
- https://nlnetlabs.nl/downloads/unbound/patch_cve_2020-12662_2020-12663.diff
- https://security-tracker.debian.org/tracker/CVE-2020-12663
- 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://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-2020-12663
- https://nvd.nist.gov/vuln/detail/CVE-2020-12663
- https://ubuntu.com/security/CVE-2020-12663
Frequently Asked Questions
What is the severity of CVE-2020-12663?
The severity of CVE-2020-12663 is high, with a severity value of 7.5.
How does CVE-2020-12663 affect Unbound?
CVE-2020-12663 affects Unbound versions before 1.10.1 and can cause an infinite loop via malformed DNS answers received from upstream servers.
Which software versions are affected by CVE-2020-12663?
CVE-2020-12663 affects Unbound versions before 1.10.1 as well as specific versions of Debian, openSUSE Leap, Canonical Ubuntu Linux, and Fedora Linux.
How can I fix CVE-2020-12663?
To fix CVE-2020-12663, upgrade to Unbound version 1.10.1 or later. For Debian, Ubuntu, openSUSE Leap, and Fedora Linux, apply the specific remedies provided in the vulnerability details.
Where can I find more information about CVE-2020-12663?
You can find more information about CVE-2020-12663 in the provided references: http://www.openwall.com/lists/oss-security/2020/05/19/5, https://nlnetlabs.nl/downloads/unbound/CVE-2020-12662_2020-12663.txt, and https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1837609
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