CVE-2019-10203

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-11-22 · updated 2026-06-17
Weakness: CWE-681

Description

PowerDNS Authoritative daemon , pdns versions 4.0.x before 4.0.9, 4.1.x before 4.1.11, exiting when encountering a serial between 2^31 and 2^32-1 while trying to notify a slave leads to DoS.

Affected products

PowerDNS Authoritative Server: from 4.0.0 before 4.0.9; from 4.1.0 before 4.1.11 — fixed in 4.0.9, 4.1.11

How to fix

Upgrade to a fixed version: PowerDNS Authoritative Server 4.0.9, 4.1.11. Check the vendor advisory for mitigations.

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10203
https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2019-06.html
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10203
https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2019-06.html

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