CVE-2020-25829

moderate-risk
Published 2020-10-16

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).

Do I need to act?

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0.35% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (5)

Affected Vendors

Powerdns Opensuse

References (6)

Third Party Advisory http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00036.html
Vendor Advisory https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-07...
Third Party Advisory https://security.gentoo.org/glsa/202012-19
Third Party Advisory http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00036.html
Vendor Advisory https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-07...
Third Party Advisory https://security.gentoo.org/glsa/202012-19
39
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 1/34 · Minimal
Exposure 12/34 · Low