CVE-2020-25829: High severity powerdns vulnerability
An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5. A remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query. This results in a denial of service for installation that always validate (dnssec=validate), and for clients requesting validation when on-demand validation is enabled (dnssec=process).
Affected Software
Event History
Frequently Asked Questions
What is CVE-2020-25829?
CVE-2020-25829 is a vulnerability found in PowerDNS Recursor before version 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5.
How does CVE-2020-25829 affect PowerDNS Recursor?
CVE-2020-25829 allows a remote attacker to cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query.
What is the severity level of CVE-2020-25829?
CVE-2020-25829 has a severity level of high, with a CVSS score of 7.5.
Which versions of PowerDNS Recursor are affected by CVE-2020-25829?
PowerDNS Recursor versions before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5 are affected by CVE-2020-25829.
How can I fix CVE-2020-25829 in PowerDNS Recursor?
To fix CVE-2020-25829, it is recommended to update PowerDNS Recursor to version 4.1.18, 4.2.5, or 4.3.5, depending on the affected version.