Denial of service in PowerDNS Authoritative Server and Recursor
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2022-27227 |
| CWE-ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
PowerDNS Recursor Server applications / DNS servers PowerDNS Authoritative Server applications / DNS servers |
| Vendor | PowerDNS.COM B.V. |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Input validation error
EUVDB-ID: #VU61631
Risk: Low
CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-27227
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsPowerDNS Recursor: 4.0.0 - 4.7.0 alpha1
PowerDNS Authoritative: 4.0.0 - 4.6.0
External linkshttp://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2022-01.html
http://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2022-01.html
http://docs.powerdns.com/recursor/security-advisories/index.html
http://doc.powerdns.com/authoritative/security-advisories/index.html
http://www.openwall.com/lists/oss-security/2022/03/25/1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
