CVE-2022-27227

Publication date 25 March 2022

Last updated 14 January 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
pdns 24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar
Not affected
22.10 kinetic Ignored end of life, was needs-triage
22.04 LTS jammy
21.10 impish Ignored end of life
20.04 LTS focal
18.04 LTS bionic
16.04 LTS xenial Ignored not feasible to fix
14.04 LTS trusty Ignored end of standard support
pdns-recursor 24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar
Not affected
22.10 kinetic Ignored end of life, was needs-triage
22.04 LTS jammy
21.10 impish Ignored end of life
20.04 LTS focal
18.04 LTS bionic
16.04 LTS xenial Ignored not feasible to fix
14.04 LTS trusty Ignored end of standard support

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Notes

hlibk

On xenial, the ixfrInProgress variable is not present, which seems to be related to the patch, among other features. It is unclear whether the code is vulnerable or not, and whether introducing these features would introduce the vulnerability as well. Upstream no longer supports the xenial version.

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H