CVE-2017-15093

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.

• CWE-20
• CWE-20

• http://www.securityfocus.com/bid/101982Third Party Advisory, VDB Entry
• https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-06.htmlMitigation, Patch, Vendor Advisory
• http://www.securityfocus.com/bid/101982Third Party Advisory, VDB Entry
• https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-06.htmlMitigation, Patch, Vendor Advisory

Published

Jan 23, 2018

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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