Denial of Service Vulnerability in PowerDNS Recursor by PowerDNS
CVE-2022-37428

6.5MEDIUM

Key Information:

Vendor
Powerdns
Status
Recursor
Vendor
CVE Published:
23 August 2022

Summary

The PowerDNS Recursor versions up to and including 4.5.9, 4.6.2, and 4.7.1 are vulnerable to a denial of service due to improper cleanup when exceptions are thrown during execution. This vulnerability manifests when protobuf logging is enabled, causing the daemon to crash after processing a specifically crafted DNS query that triggers the issue. The affected system could be rendered inoperable, impacting DNS resolution capabilities and potentially disrupting services that rely on DNS.

References

https://docs.powerdns.com/recursor/lua-config/protobuf.html
x_refsource_MISC
https://docs.powerdns.com/recursor/security-advisories/po...
x_refsource_MISC
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisoryx_refsource_FEDORA

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.