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.
CVSS Details
- CVSS 3.1 Base Score: 8.6
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade bind | Aug 22, 2024 | May 19, 2020 |
| Amazon Linux Ami 2 | — | Upgrade bind-licenseUpgrade bind-chrootUpgrade bind-debuginfoUpgrade bind-sdbUpgrade bindUpgrade bind-export-libsUpgrade bind-export-develUpgrade bind-lite-develUpgrade bind-utilsUpgrade bind-pkcs11-develUpgrade bind-develUpgrade bind-libs-liteUpgrade bind-libsUpgrade bind-sdb-chrootUpgrade bind-pkcs11-utilsUpgrade bind-pkcs11Upgrade bind-pkcs11-libs | May 22, 2020 | May 19, 2020 |
| Amazon_linux | — | Upgrade bind | Jun 4, 2020 | May 19, 2020 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | May 19, 2020 |
| Centos_linux | — | Upgrade bind-develUpgrade bind-libs-liteUpgrade bind-sdbUpgrade bind-utilsUpgrade bind-pkcs11-libsUpgrade bind-export-libsUpgrade bind-lite-develUpgrade bind-pkcs11-debuginfoUpgrade bind-pkcs11-utilsUpgrade bind-debuginfoUpgrade python3-bindUpgrade bind-chrootUpgrade bind-libs-lite-debuginfoUpgrade bind-licenseUpgrade bind-pkcs11Upgrade bind-pkcs11-libs-debuginfoUpgrade bind-pkcs11-develUpgrade bind-utils-debuginfoUpgrade bind-export-develUpgrade bind-debugsourceUpgrade bind-libsUpgrade bind-export-libs-debuginfoUpgrade bind-sdb-debuginfoUpgrade bind-sdb-chrootUpgrade bind-libs-debuginfoUpgrade bind-pkcs11-utils-debuginfoUpgrade bind | May 29, 2020 | May 19, 2020 |
| Debian | — | Upgrade bind9 | May 21, 2020 | May 19, 2020 |
| Dns Bind | — | Upgrade ISC BIND to latest version | May 26, 2020 | May 19, 2020 |
| F5 Big Ip | — | Update F5 BIG-IP to the latest version | Jun 17, 2026 | May 21, 2020 |
| Huawei Euleros 2_0_sp2 | — | Upgrade bind-licenseUpgrade bind-pkcs11-libsUpgrade bind-libs-liteUpgrade bind-pkcs11-utilsUpgrade bind-chrootUpgrade bindUpgrade bind-libsUpgrade bind-pkcs11Upgrade bind-utils | Jun 17, 2020 | May 19, 2020 |
| Huawei Euleros 2_0_sp3 | — | Upgrade bind-chrootUpgrade bind-pkcs11-libsUpgrade bind-libs-liteUpgrade bind-utilsUpgrade bind-licenseUpgrade bindUpgrade bind-pkcs11Upgrade bind-libsUpgrade bind-pkcs11-utils | Sep 28, 2020 | May 19, 2020 |
| Huawei Euleros 2_0_sp5 | — | Upgrade bind-pkcs11Upgrade bind-libsUpgrade bind-chrootUpgrade bind-utilsUpgrade bind-pkcs11-libsUpgrade bind-licenseUpgrade bindUpgrade bind-libs-liteUpgrade bind-pkcs11-utils | Sep 3, 2020 | May 19, 2020 |
| Huawei Euleros 2_0_sp8 | — | Upgrade bind-export-libsUpgrade bind-licenseUpgrade bind-pkcs11-utilsUpgrade python3-bindUpgrade bind-export-develUpgrade bind-libs-liteUpgrade bind-pkcs11-libsUpgrade bind-utilsUpgrade bindUpgrade bind-libsUpgrade bind-chrootUpgrade bind-pkcs11 | Jul 31, 2020 | May 19, 2020 |
| Ibm Aix | — | Apply the fix or workaround for bind_advisory17 | Aug 24, 2020 | May 19, 2020 |
| Oracle Solaris | — | Upgrade service/network/dns/bind to version 9.11.19.0.0-11.4.22.0.1.69.4 on Solaris 11.4Upgrade network/dns/bind to version 9.11.19.0.0-11.4.22.0.1.69.4 on Solaris 11.4 | Jan 19, 2021 | May 19, 2020 |
| Oracle_linux | — | Upgrade bind-pkcs11Upgrade bind-pkcs11-develUpgrade bind-sdb-chrootUpgrade bind-export-develUpgrade bind-sdbUpgrade bind-licenseUpgrade bindUpgrade bind-export-libsUpgrade bind-chrootUpgrade bind-lite-develUpgrade bind-libs-liteUpgrade bind-libsUpgrade bind-develUpgrade python3-bindUpgrade bind-pkcs11-libsUpgrade bind-utilsUpgrade bind-pkcs11-utils | Jun 4, 2020 | May 19, 2020 |
| Redhat_linux | — | Upgrade bind-licenseUpgrade bind-chrootUpgrade bind-debuginfoUpgrade bind-export-libsUpgrade bind-sdbUpgrade bind-sdb-debuginfoUpgrade bind-libs-lite-debuginfoUpgrade bindUpgrade bind-pkcs11-libs-debuginfoUpgrade bind-pkcs11-utils-debuginfoUpgrade bind-lite-develUpgrade bind-debugsourceUpgrade bind-utils-debuginfoUpgrade bind-export-develNo solution existsUpgrade python3-bindUpgrade bind-libsUpgrade bind-develUpgrade bind-libs-debuginfoUpgrade bind-libs-liteUpgrade bind-utilsUpgrade bind-pkcs11-develUpgrade bind-pkcs11-utilsUpgrade bind-pkcs11-debuginfoUpgrade bind-pkcs11Upgrade bind-pkcs11-libsUpgrade bind-sdb-chrootUpgrade bind-export-libs-debuginfo | May 29, 2020 | May 19, 2020 |
| Suse | — | Upgrade libisc1606Upgrade libirs-develUpgrade libisccfg160Upgrade libuv1-32bitUpgrade libuv-develUpgrade libisccfg1600-32bitUpgrade bindUpgrade liblwres160Upgrade libbind9-160Upgrade bind-devel-32bitUpgrade bind-develUpgrade bind-chrootenvUpgrade libdns1605-32bitUpgrade bind-libsUpgrade libisccc1600-32bitUpgrade libbind9-1600-32bitUpgrade libbind9-1600Upgrade sysuser-shadowUpgrade libisc166-32bitUpgrade libns1604Upgrade libuv1Upgrade bind-libs-32bitUpgrade libirs1601-32bitUpgrade bind-docUpgrade bind-utilsUpgrade python-bindUpgrade libisccfg1600Upgrade libirs160Upgrade libns1604-32bitUpgrade libisccc1600Upgrade libisc166Upgrade sysuser-toolsUpgrade libdns169Upgrade libdns1605Upgrade libirs1601Upgrade python3-bindUpgrade libisc1606-32bitUpgrade libisccc160 | May 21, 2020 | May 19, 2020 |
| Ubuntu | — | Upgrade bind9 (Ubuntu Pro)Upgrade bind9 | May 20, 2020 | May 19, 2020 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | May 19, 2020 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub