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Medium

Security advisory

Type: advisorySources: OSVCVE: 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.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2017-15093
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 05:27 UTC · Revision 1

Source evidence

CVE-2017-15093

core-osv · Original source

Published 23 Jan 2018, 15:29 UTC

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.

osv:CVE-2017-15093
Complete source record
{
  "id": "2dd784acf20df9591096e5eb3b61c007073ed9f6ad15148d418606115527ffd3",
  "url": "https://osv.dev/vulnerability/CVE-2017-15093",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2017-15093",
    "summary": "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.",
    "evidence": "osv:CVE-2017-15093",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2017-15093",
      "aliases": [
        "CVE-2017-15093"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/powerdns/pdns",
              "type": "GIT",
              "events": [
                {
                  "introduced": "8af92496cde4e280f80dc5cf94269a001509c9ee"
                },
                {
                  "last_affected": "ed2de597f393c7ab637d47effca441f973a279d8"
                },
                {
                  "introduced": "ba64cecd417688dc39c75e92f1a23b91f7f46d64"
                },
                {
                  "last_affected": "f8023470fdd6c5af6f163857757a90f5955a860e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.0"
                      },
                      {
                        "last_affected": "3.7.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.0.0"
                      },
                      {
                        "last_affected": "4.0.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "rec-3.7.4",
            "rec-4.0.6",
            "rec-4.0.5",
            "rec-4.0.5-rc2",
            "rec-4.0.5-rc1",
            "rec-4.0.4",
            "rec-4.0.3",
            "dnsdist-1.1.0-beta1",
            "rec-4.0.2",
            "rec-4.0.1",
            "auth-4.0.1",
            "rec-4.0.0",
            "auth-4.0.0",
            "rec-3.7.3",
            "rec-3.7.2",
            "rec-3.7.1",
            "rec-3.7.0",
            "rec-3.7.0-rc2",
            "rec-3.7.0-rc1",
            "auth-3.4.0",
            "auth-3.4.0-rc2",
            "rec-3.6.0",
            "auth-3.4.0-rc1",
            "rec-3.5",
            "rec-3.5-rc5",
            "rec-3.5-rc4",
            "rec-3.5-rc3",
            "rec-3.5-rc1",
            "auth-3.2-rc4",
            "auth-3.2-rc3",
            "auth-3.2-rc2",
            "auth-3.2-rc1",
            "auth-3.1-rc3",
            "auth-3.1-rc2",
            "auth-3.1-rc1",
            "rec-3.3.1",
            "rec-3.1.4",
            "rec-3.0.1",
            "rec-3-0-1",
            "rec-3.0",
            "rec-3-0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-15093.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:29.073799628Z",
      "provider": "osv",
      "references": [
        "https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-06.html"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2017-15093",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 432215,
  "published_at": "2018-01-23T15:29:00.383+00:00"
}