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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade bind | Aug 22, 2024 | May 19, 2020 |
| Amazon Linux Ami 2 | — | Upgrade bind-libs-liteUpgrade bind-pkcs11-utilsUpgrade bind-pkcs11Upgrade bind-sdb-chrootUpgrade bind-utilsUpgrade bind-pkcs11-libsUpgrade bind-develUpgrade bind-pkcs11-develUpgrade bind-libsUpgrade bind-export-libsUpgrade bind-lite-develUpgrade bind-debuginfoUpgrade bind-licenseUpgrade bind-export-develUpgrade bind-chrootUpgrade bind-sdbUpgrade bind | 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-utilsUpgrade bind-sdbUpgrade python3-bindUpgrade bind-debuginfoUpgrade bind-pkcs11-utilsUpgrade bind-export-libsUpgrade bind-pkcs11-debuginfoUpgrade bind-libs-lite-debuginfoUpgrade bind-chrootUpgrade bind-lite-develUpgrade bind-pkcs11-libsUpgrade bind-libs-liteUpgrade bind-develUpgrade bind-utils-debuginfoUpgrade bind-licenseUpgrade bind-pkcs11-develUpgrade bind-libs-debuginfoUpgrade bindUpgrade bind-libsUpgrade bind-export-develUpgrade bind-pkcs11Upgrade bind-export-libs-debuginfoUpgrade bind-pkcs11-libs-debuginfoUpgrade bind-sdb-debuginfoUpgrade bind-debugsourceUpgrade bind-sdb-chrootUpgrade bind-pkcs11-utils-debuginfo | 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-libsUpgrade bind-utilsUpgrade bind-pkcs11-libsUpgrade bind-libs-liteUpgrade bindUpgrade bind-chrootUpgrade bind-pkcs11Upgrade bind-pkcs11-utilsUpgrade bind-license | Jun 17, 2020 | May 19, 2020 |
| Huawei Euleros 2_0_sp3 | — | Upgrade bind-libs-liteUpgrade bind-pkcs11-libsUpgrade bind-chrootUpgrade bind-utilsUpgrade bind-libsUpgrade bind-licenseUpgrade bindUpgrade bind-pkcs11-utilsUpgrade bind-pkcs11 | Sep 28, 2020 | May 19, 2020 |
| Huawei Euleros 2_0_sp5 | — | Upgrade bind-pkcs11-utilsUpgrade bindUpgrade bind-pkcs11-libsUpgrade bind-libsUpgrade bind-chrootUpgrade bind-pkcs11Upgrade bind-utilsUpgrade bind-libs-liteUpgrade bind-license | Sep 3, 2020 | May 19, 2020 |
| Huawei Euleros 2_0_sp8 | — | Upgrade bind-licenseUpgrade bind-export-libsUpgrade bind-export-develUpgrade bind-pkcs11-utilsUpgrade python3-bindUpgrade bind-utilsUpgrade bind-libs-liteUpgrade bind-pkcs11Upgrade bind-chrootUpgrade bind-pkcs11-libsUpgrade bindUpgrade bind-libs | 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 network/dns/bind to version 9.11.19.0.0-11.4.22.0.1.69.4 on Solaris 11.4Upgrade service/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-libs-liteUpgrade bind-pkcs11-libsUpgrade bind-pkcs11-utilsUpgrade bind-utilsUpgrade bind-libsUpgrade python3-bindUpgrade bind-chrootUpgrade bind-lite-develUpgrade bind-develUpgrade bind-sdb-chrootUpgrade bind-export-libsUpgrade bind-export-develUpgrade bind-pkcs11Upgrade bind-sdbUpgrade bind-pkcs11-develUpgrade bindUpgrade bind-license | Jun 4, 2020 | May 19, 2020 |
| Redhat_linux | — | Upgrade bind-pkcs11-utilsNo solution existsUpgrade bind-libs-debuginfoUpgrade bind-pkcs11-libsUpgrade bind-libs-liteUpgrade bind-pkcs11-debuginfoUpgrade bind-libsUpgrade bind-pkcs11Upgrade bind-sdb-chrootUpgrade bind-export-libs-debuginfoUpgrade bind-utilsUpgrade bind-pkcs11-develUpgrade bind-develUpgrade python3-bindUpgrade bind-pkcs11-utils-debuginfoUpgrade bind-libs-lite-debuginfoUpgrade bind-licenseUpgrade bind-sdb-debuginfoUpgrade bind-pkcs11-libs-debuginfoUpgrade bind-utils-debuginfoUpgrade bind-debugsourceUpgrade bind-export-develUpgrade bind-debuginfoUpgrade bind-chrootUpgrade bind-export-libsUpgrade bindUpgrade bind-lite-develUpgrade bind-sdb | May 29, 2020 | May 19, 2020 |
| Suse | — | Upgrade libisccc1600-32bitUpgrade libuv1-32bitUpgrade libbind9-1600-32bitUpgrade libisc1606Upgrade bind-chrootenvUpgrade libisccfg160Upgrade libisccfg1600-32bitUpgrade bind-devel-32bitUpgrade bind-develUpgrade libirs-develUpgrade bindUpgrade liblwres160Upgrade libuv-develUpgrade libdns1605-32bitUpgrade libbind9-160Upgrade bind-libsUpgrade libbind9-1600Upgrade bind-utilsUpgrade libisc166-32bitUpgrade libisccfg1600Upgrade libns1604-32bitUpgrade libisccc1600Upgrade libns1604Upgrade libirs160Upgrade bind-libs-32bitUpgrade libisccc160Upgrade python-bindUpgrade libisc1606-32bitUpgrade libdns169Upgrade bind-docUpgrade sysuser-shadowUpgrade python3-bindUpgrade libdns1605Upgrade libuv1Upgrade libisc166Upgrade sysuser-toolsUpgrade libirs1601Upgrade libirs1601-32bit | 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 |
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