The Quarterly Threat Landscape Report is out. See what attackers are targeting now.Read report
An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 3.7.4 and 4.0.4, allowing a remote, unauthenticated attacker to cause an abnormal CPU usage load on the PowerDNS server by sending crafted DNS queries, which might result in a partial denial of service if the system becomes overloaded. This issue is based on the fact that the PowerDNS server parses all records present in a query regardless of whether they are needed or even legitimate. A specially crafted query containing a large number of records can be used to take advantage of that behaviour.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade pdns-recursorUpgrade pdns | Sep 11, 2018 | Sep 11, 2018 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Sep 11, 2018 |
| Debian | — | Upgrade pdnsUpgrade pdns-recursor | Jan 14, 2017 | Jan 13, 2017 |
| Freebsd | — | Upgrade powerdnsUpgrade powerdns-recursor | Jan 19, 2017 | Jan 18, 2017 |
| Suse | — | Upgrade pdns-backend-lua-debuginfoUpgrade pdns-debuginfoUpgrade pdns-recursor-debugsourceUpgrade pdns-backend-mysql-debuginfoUpgrade pdns-backend-postgresql-debuginfoUpgrade pdns-backend-ldap-debuginfoUpgrade pdns-backend-mysqlUpgrade pdnsUpgrade pdns-backend-mydns-debuginfoUpgrade pdns-backend-sqlite3Upgrade pdns-backend-mydnsUpgrade pdns-recursorUpgrade pdns-backend-ldapUpgrade pdns-backend-sqlite3-debuginfoUpgrade pdns-recursor-debuginfoUpgrade pdns-debugsourceUpgrade pdns-backend-luaUpgrade pdns-backend-postgresql | Jan 19, 2017 | Jan 13, 2017 |
| Ubuntu | — | Upgrade pdns-recursor | Nov 19, 2024 | Sep 11, 2018 |
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