CVE-2017-15093 Code injection in PowerDNS Recursor
An authenticated user can inject configuration directives into PowerDNS Recursor when api-config-dir is enabled, potentially leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-15093?
CVE-2017-15093 is a medium-severity code injection vulnerability in Powerdns Recursor, published on 23 Jan 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
When api-config-dir is set to a non-empty value, which is not the case by default, the API in PowerDNS Recursor 4.x up to and including 4.0.6 and 3.x up to and including 3.7.4 allows an authorized user to update the Recursor's ACL by adding and removing netmasks, and to configure forward zones. It was discovered that the new netmask and IP addresses of forwarded zones were not sufficiently validated, allowing an authenticated user to inject new configuration directives into the Recursor's configuration.
Weakness: CWE-20
Which versions are affected by CVE-2017-15093?
It affects 1 product.
Products include Powerdns Recursor.
How do I fix CVE-2017-15093?
Upgrade to a fixed version.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2017-15093 being exploited?
There is no known exploitation of CVE-2017-15093 in the wild and no public exploit code.
Other vulnerabilities in Powerdns Recursor
- CVE-2009-4009 Memory corruption in n/a
- CVE-2020-10030 Memory corruption in n/a
- CVE-2025-59023 Crafted delegations or IP fragments can poison cached delegations in Recursor
- CVE-2025-59030 Insufficient validation of incoming notifies over TCP can lead to a denial of service in Recursor
- CVE-2023-22617 Denial of service in n/a
Sources
Also known as DEBIAN-CVE-2017-15093, GHSA-jc23-xg6p-84pp, UBUNTU-CVE-2017-15093.