CVE-2016-7068
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…
Impact
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 products
| Vendor | Product | Affected versions |
|---|---|---|
| Powerdns | Authoritative | before 3.4.11 from 4.0.0 before 4.0.2 |
| Powerdns | Recursor | before 3.7.4 from 4.0.0 before 4.0.4 |
| Debian | Debian Linux | Version 8.0 |
Weakness classification
References
- NVD record
- CVE.org record
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7068
- https://doc.powerdns.com/md/security/powerdns-advisory-2016-02/
- https://www.debian.org/security/2017/dsa-3763
- https://www.debian.org/security/2017/dsa-3764
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7068
- https://doc.powerdns.com/md/security/powerdns-advisory-2016-02/
- https://www.debian.org/security/2017/dsa-3763
- https://www.debian.org/security/2017/dsa-3764