PowerDNS Recursor API Configuration Vulnerability Exposes Configuration Directives
CVE-2017-15093

5.3MEDIUM

Key Information:

Vendor
Powerdns
Status
Powerdns Recursor
Vendor
CVE Published:
23 January 2018

Summary

The PowerDNS Recursor is vulnerable when the api-config-dir is set to a non-empty value. This configuration allows authorized users to manipulate the Recursor's Access Control List (ACL) by adding or removing netmasks. Furthermore, it permits the configuration of forward zones without adequate validation of new netmask and IP addresses. This lack of sufficient checks can lead to unauthorized injection of new configuration directives, potentially compromising the integrity and security of the DNS service.

Affected Version(s)

PowerDNS Recursor 4.x up to and including 4.0.6

PowerDNS Recursor 3.x up to and including 3.7.4

References

http://www.securityfocus.com/bid/101982
vdb-entryx_refsource_BID
https://doc.powerdns.com/recursor/security-advisories/pow...
x_refsource_CONFIRM

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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