CVE-2020-25829 — Vulnetix

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CVE-2020-25829 PUBLISHED

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).

EPSS 0.35% · 57.2th percentile

Risk Scores

EPSS Score

0.35%

57.2th percentile

Affected Products

Vendor	Product	Versions
Ubuntu:Pro:16.04:LTS	pdns-recursor	3.7.3-1, 4.0.0~alpha2-2ubuntu0.1+esm1, 4.0.0~alpha2-2ubuntu0.1
Ubuntu:Pro:18.04:LTS	pdns-recursor	4.1.1-2ubuntu0.1~esm1, 4.0.6-1, 4.0.6-1build1
Ubuntu:Pro:20.04:LTS	pdns-recursor	4.2.1-1ubuntu0.1~esm1, 4.2.1-1build2, 4.2.1-1build1

Timeline

Oct 12, 2020 CVE Published
Apr 14, 2021 EPSS Score
Jun 22, 2021 EPSS Score
Aug 23, 2021 EPSS Score
Oct 24, 2021 EPSS Score
Dec 25, 2021 EPSS Score
Feb 25, 2022 EPSS Score
Apr 1, 2022 EPSS Score
Apr 28, 2022 EPSS Score
Jun 29, 2022 EPSS Score
Aug 31, 2022 EPSS Score
Nov 1, 2022 EPSS Score

References

https://ubuntu.com/security/CVE-2020-25829 third-party-advisory
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-07.html third-party-advisory
https://www.cve.org/CVERecord?id=CVE-2020-25829 third-party-advisory

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