What’s Vulnerable › Vulnerabilities
CVE-2022-27227
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 5.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2022-03-25 · updated 2026-06-17
Description
In PowerDNS Authoritative Server before 4.4.3, 4.5.x before 4.5.4, and 4.6.x before 4.6.1 and PowerDNS Recursor before 4.4.8, 4.5.x before 4.5.8, and 4.6.x before 4.6.1, insufficient validation of an IXFR end condition causes incomplete zone transfers to be handled as successful transfers.
Affected products
- Fedoraproject Fedora: 34, 35, 36
- PowerDNS Authoritative Server: before 4.4.3; from 4.5.0 before 4.5.4; from 4.6.0 before 4.6.1 — fixed in 4.4.3, 4.5.4, 4.6.1
- PowerDNS Recursor: before 4.4.8; from 4.5.0 before 4.5.8; from 4.6.0 before 4.6.1 — fixed in 4.4.8, 4.5.8, 4.6.1
How to fix
Upgrade to a fixed version: PowerDNS Authoritative Server 4.4.3, 4.5.4, 4.6.1; PowerDNS Recursor 4.4.8, 4.5.8, 4.6.1. Check the vendor advisory for mitigations.
References
- http://www.openwall.com/lists/oss-security/2022/03/25/1
- https://doc.powerdns.com/authoritative/security-advisories/index.html
- https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2022-01.html
- https://docs.powerdns.com/recursor/security-advisories/index.html
- https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2022-01.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2QKN56VWXUVFOYGUN75N5IRNK66OHTHT/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HEABZA46XYEUWMGSY2GYYVHISBVWEHIO/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IPHOFNI7FKM5NNOVDOWO4TBXFAFICCUE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZJSKICB67SPPEGNXCQLZVSWR6QGCN3KP/
- http://www.openwall.com/lists/oss-security/2022/03/25/1
- https://doc.powerdns.com/authoritative/security-advisories/index.html
- https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2022-01.html
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