Is CVE-2020-25829 in the CISA KEV catalog?

No. CVE-2020-25829 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-25829?

CVE-2020-25829 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2020-25829?

CVE-2020-25829 has an EPSS score of 6.46% (93th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-25829?

Upgrade pdns-recursor on debian 11 to 4.3.5-1 or later.

CVE & CISA-KEV Catalog

CVE-2020-25829

HIGHEPSS 93th pctl

7.5

CVSS v3

NVD

Description

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).

How to fix

Remediation Available

pdns-recursorDebian

Fixed in:4.3.5-1CVE-2020-25829

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

6.46%probability of exploitation in 30 days

93rdpercentile

High risk: more likely to be exploited than 93% of all known CVEs.

References

Vendor Advisory1

docs.powerdns.com

Third-Party Advisory2

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.