CVE-2020-25829
First published: Fri Oct 16 2020(Updated: )
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).
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| PowerDNS Recursor | <4.1.18 | |
| PowerDNS Recursor | >=4.2.0<4.2.5 | |
| PowerDNS Recursor | >=4.3.0<4.3.5 | |
| openSUSE Backports SLE | =15.0-sp1 | |
| openSUSE Backports SLE | =15.0-sp2 | |
| openSUSE Leap | =15.1 | |
| openSUSE Leap | =15.2 |
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Reference Links
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.
- collector/nvd-index
- agent/references
- agent/severity
- agent/author
- agent/type
- agent/tags
- agent/event
- agent/description
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- vendor/powerdns
- canonical/powerdns recursor
- version/powerdns recursor/4.2.0
- version/powerdns recursor/4.3.0
- vendor/opensuse
- canonical/opensuse backports sle
- version/opensuse backports sle/15.0-sp1
- version/opensuse backports sle/15.0-sp2
- canonical/opensuse leap
- version/opensuse leap/15.1
- version/opensuse leap/15.2