CVE-2016-7068
HIGH7.5EPSS 0.08%pdns-recursor - security update
Published: 9/11/2018Modified: 4/28/2026
Also known as:DEBIAN-CVE-2016-7068
Description
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.
Affected packages (4)
- Debian/pdnsfrom 0, < 4.0.2-1
- Debian/pdns-recursorfrom 0, < 4.0.4-1
- Debian/pdns-recursorfrom 0, < 3.3-3+deb7u2
- Debian/pdns-recursorfrom 0, < 3.6.2-2+deb8u3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |