High severity7.5NVD Advisory· Published May 19, 2020· Updated Jun 17, 2026
CVE-2020-12663
CVE-2020-12663
Description
Unbound before 1.10.1 has an infinite loop via malformed DNS answers received from upstream servers.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
23- Unbound/Unbounddescription
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*+ 2 more
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
- osv-coords11 versionspkg:rpm/suse/unbound&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/unbound&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/unbound&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/unbound&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/unbound&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP1pkg:rpm/suse/unbound&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/opensuse/libunbound-devel-mini&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/libunbound-devel-mini&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/unbound&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/unbound&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/unbound&distro=openSUSE%20Tumbleweed
< 1.6.8-3.6.1+ 10 more
- (no CPE)range: < 1.6.8-3.6.1
- (no CPE)range: < 1.6.8-3.6.1
- (no CPE)range: < 1.6.8-3.6.1
- (no CPE)range: < 1.6.8-3.6.1
- (no CPE)range: < 1.6.8-10.3.1
- (no CPE)range: < 1.6.8-10.3.1
- (no CPE)range: < 1.6.8-lp152.9.3.1
- (no CPE)range: < 1.6.8-lp151.8.3.1
- (no CPE)range: < 1.6.8-lp151.8.3.1
- (no CPE)range: < 1.6.8-lp152.9.3.1
- (no CPE)range: < 1.13.2-1.2
Patches
Vulnerability mechanics
References
10- www.openwall.com/lists/oss-security/2020/05/19/5nvdMailing ListPatchThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.htmlnvdMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.htmlnvdMailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2021/02/msg00017.htmlnvdMailing ListThird Party Advisory
- nlnetlabs.nl/downloads/unbound/CVE-2020-12662_2020-12663.txtnvdVendor Advisory
- security.freebsd.org/advisories/FreeBSD-SA-20:19.unbound.ascnvdThird Party Advisory
- usn.ubuntu.com/4374-1/nvdThird Party Advisory
- www.debian.org/security/2020/dsa-4694nvdThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F5NFROI2OMCZLYRTCNGHGO3TUD32LCIQ/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YJ42N2HBZ3DXMSEC56SWIIOFQGOS5M7I/nvd
News mentions
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