An issue has been found in PowerDNS Authoritative Server before 3.4.11 and 4.0.2 allowing a remote, unauthenticated attacker to cause a denial of service by opening a large number of TCP connections to the web server. If the web server runs out of file descriptors, it triggers an exception and terminates the whole PowerDNS process. While it's more complicated for an unauthorized attacker to make the web server run out of file descriptors since its connection will be closed just after being accepted, it might still be possible.
CVSS Details
- CVSS 3.1 Base Score: 5.3
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade pdns | Sep 10, 2018 | Sep 10, 2018 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Sep 10, 2018 |
| Debian | — | Upgrade pdns | Jan 14, 2017 | Jan 13, 2017 |
| Freebsd | — | Upgrade powerdns-recursorUpgrade powerdns | Jan 19, 2017 | Jan 18, 2017 |
| Suse | — | Upgrade pdnsUpgrade pdns-backend-lua-debuginfoUpgrade pdns-backend-sqlite3Upgrade pdns-backend-mysqlUpgrade pdns-backend-ldapUpgrade pdns-debuginfoUpgrade pdns-backend-postgresql-debuginfoUpgrade pdns-debugsourceUpgrade pdns-backend-ldap-debuginfoUpgrade pdns-backend-mydns-debuginfoUpgrade pdns-backend-luaUpgrade pdns-backend-postgresqlUpgrade pdns-backend-mysql-debuginfoUpgrade pdns-backend-mydnsUpgrade pdns-backend-sqlite3-debuginfo | Jan 19, 2017 | Jan 13, 2017 |
| Ubuntu | — | No solution exists | Jun 26, 2025 | Sep 10, 2018 |
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