High severity8.6NVD Advisory· Published May 19, 2020· Updated Jun 17, 2026
CVE-2020-8616
CVE-2020-8616
Description
A malicious actor who intentionally exploits this lack of effective limitation on the number of fetches performed when processing referrals can, through the use of specially crafted referrals, cause a recursing server to issue a very large number of fetches in an attempt to process the referral. This has at least two potential effects: The performance of the recursing server can potentially be degraded by the additional work required to perform these fetches, and The attacker can exploit this behavior to use the recursing server as a reflector in a reflection attack with a high amplification factor.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
59(expand)+ 1 more
- (no CPE)
- (no CPE)range: 9.0.0 -> 9.11.18, 9.12.0 -> 9.12.4-P2, 9.14.0 -> 9.14.11, 9.16.0 -> 9.16.2, and releases 9.17.0 -> 9.17.1 of the 9.17 experimental development branch. All releases in the obsolete 9.13 and 9.15 development branches. All releases of BIND Supported Preview Edition from 9.9.3-S1 -> 9.11.18-S1
- osv-coords57 versionspkg:apk/chainguard/bindpkg:apk/chainguard/bind-devpkg:apk/chainguard/bind-dnssec-rootpkg:apk/chainguard/bind-dnssec-toolspkg:apk/chainguard/bind-docpkg:apk/chainguard/bind-libspkg:apk/chainguard/bind-pluginspkg:apk/chainguard/bind-toolspkg:apk/wolfi/bindpkg:apk/wolfi/bind-devpkg:apk/wolfi/bind-dnssec-rootpkg:apk/wolfi/bind-dnssec-toolspkg:apk/wolfi/bind-docpkg:apk/wolfi/bind-libspkg:apk/wolfi/bind-pluginspkg:apk/wolfi/bind-toolspkg:rpm/opensuse/bind&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/bind&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/bind&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/libuv&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/libuv&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/sysuser-tools&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/sysuser-tools&distro=openSUSE%20Leap%2015.2pkg:rpm/suse/bind&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/bind&distro=SUSE%20Enterprise%20Storage%205pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP1pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP1pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP2pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/bind&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/bind&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/bind&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/sysuser-tools&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/sysuser-tools&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/sysuser-tools&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP1pkg:rpm/suse/sysuser-tools&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/suse/sysuser-tools&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP2pkg:rpm/suse/sysuser-tools&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/sysuser-tools&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015
< 0+ 56 more
- (no CPE)range: < 0
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- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 9.16.6-lp151.11.9.1
- (no CPE)range: < 9.16.6-lp152.14.3.1
- (no CPE)range: < 9.16.20-1.4
- (no CPE)range: < 1.18.0-lp151.3.3.1
- (no CPE)range: < 1.18.0-lp152.4.3.1
- (no CPE)range: < 2.0-lp151.4.3.1
- (no CPE)range: < 2.0-lp152.5.3.1
- (no CPE)range: < 9.9.9P1-63.17.1
- (no CPE)range: < 9.9.9P1-63.17.1
- (no CPE)range: < 9.16.6-12.32.1
- (no CPE)range: < 9.16.6-12.32.1
- (no CPE)range: < 9.16.6-12.32.1
- (no CPE)range: < 9.16.6-12.32.1
- (no CPE)range: < 9.16.6-12.32.1
- (no CPE)range: < 9.16.6-12.32.1
- (no CPE)range: < 9.9.6P1-0.51.20.1
- (no CPE)range: < 9.9.6P1-0.51.20.1
- (no CPE)range: < 9.9.9P1-63.17.1
- (no CPE)range: < 9.9.9P1-63.17.1
- (no CPE)range: < 9.9.9P1-63.17.1
- (no CPE)range: < 9.9.9P1-63.17.1
- (no CPE)range: < 9.11.2-3.17.1
- (no CPE)range: < 9.11.2-3.17.1
- (no CPE)range: < 9.16.6-12.32.1
- (no CPE)range: < 9.9.9P1-63.17.1
- (no CPE)range: < 9.9.9P1-63.17.1
- (no CPE)range: < 9.11.2-3.17.1
- (no CPE)range: < 9.11.2-3.17.1
- (no CPE)range: < 9.16.6-12.32.1
- (no CPE)range: < 9.11.2-3.17.1
- (no CPE)range: < 9.11.2-3.17.1
- (no CPE)range: < 9.9.9P1-63.17.1
- (no CPE)range: < 9.9.9P1-63.17.1
- (no CPE)range: < 9.9.9P1-63.17.1
- (no CPE)range: < 2.0-4.2.8
- (no CPE)range: < 2.0-4.2.8
- (no CPE)range: < 2.0-4.2.8
- (no CPE)range: < 2.0-4.2.8
- (no CPE)range: < 2.0-4.2.8
- (no CPE)range: < 2.0-4.2.8
- (no CPE)range: < 2.0-4.2.8
Patches
Vulnerability mechanics
References
13- www.openwall.com/lists/oss-security/2020/05/19/4nvdMailing ListPatchThird Party Advisory
- kb.isc.org/docs/cve-2020-8616nvdPatchVendor Advisory
- www.nxnsattack.comnvdExploitThird Party Advisory
- www.debian.org/security/2020/dsa-4689nvdThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.htmlnvd
- lists.debian.org/debian-lts-announce/2020/05/msg00031.htmlnvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JKJXVBOKZ36ER3EUCR7VRB7WGHIIMPNJ/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WOGCJS2XQ3SQNF4W6GLZ73LWZJ6ZZWZI/nvd
- security.netapp.com/advisory/ntap-20200522-0002/nvd
- usn.ubuntu.com/4365-1/nvd
- usn.ubuntu.com/4365-2/nvd
- www.synology.com/security/advisory/Synology_SA_20_12nvd
News mentions
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