Input validation error in PowerDNS Recursor and PowerDNS Authoritative - CVE-2022-27227

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Main Vulnerability Database Vulnerabilities #VU61631

Input validation error in PowerDNS Recursor and PowerDNS Authoritative - CVE-2022-27227

Published: March 26, 2022


Vulnerability identifier: #VU61631
CSH Severity: Low
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-27227
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of an incoming IXFR transfer. A remote attacker can pass specially crafted input to the server and cause incomplete zone transfer to be handled as successful transfers.


Affected software

PowerDNS Recursor
PowerDNS Authoritative
Arch Linux
Fedora
Ubuntu
pdns-recursor (Ubuntu package)
pdns-server (Ubuntu package)
pdns-tools (Ubuntu package)
pdns
pdns-recursor

How to mitigate CVE-2022-27227

Install updates from vendor's website.

PowerDNS Recursor - addressed in versions 4.4.8, 4.5.8, 4.6.1
PowerDNS Authoritative - addressed in versions 4.4.3, 4.5.4, 4.6.1
pdns-recursor (Ubuntu package) - update to Ubuntu Pro
pdns-server (Ubuntu package) - update to Ubuntu Pro
pdns-tools (Ubuntu package) - update to Ubuntu Pro
pdns - addressed in versions 4.6.1-1.el8, 4.6.1-1.el9, 4.6.1-1.fc34, 4.6.1-1.fc35, 4.6.1-1.fc36, 4.6.2-1.el8, 4.6.2-1.el9, 4.6.2-1.fc34, 4.6.2-1.fc35, 4.6.2-1.fc36
pdns-recursor - addressed in versions 4.6.2-1.fc36, 4.8.4-1.el8, 4.8.4-1.el9

External References

Related Security Bulletins