Denial of Service Vulnerability in PowerDNS Authoritative Server
CVE-2016-5427

7.5HIGH

Key Information:

Vendor
Powerdns
Status
Authoritative
Vendor
CVE Published:
21 September 2016

Summary

The PowerDNS Authoritative Server, prior to version 3.4.10, is susceptible to a denial of service condition due to improper handling of a dot (.) character within DNS labels. This vulnerability enables remote attackers to create specially crafted DNS queries that can lead to increased backend CPU consumption, ultimately affecting the server's performance and availability.

References

https://github.com/PowerDNS/pdns/commit/881b5b03a590198d0...
x_refsource_CONFIRM
http://www.securitytracker.com/id/1036761
vdb-entryx_refsource_SECTRACK
http://www.debian.org/security/2016/dsa-3664
vendor-advisoryx_refsource_DEBIAN

EPSS Score

32% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.