CVE-2020-25829
high
CVSS v3
—
CVSS v2
—
VIR risk
8.0
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).
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2020-25829
Vendor advisory: arch — https://security.archlinux.org/ASA-202010-6
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 4.3.5-1 | |
| debian | bookworm | fixed | 4.3.5-1 |
| debian | bullseye | fixed | 4.3.5-1 |
| debian | forky | fixed | 4.3.5-1 |
| debian | sid | fixed | 4.3.5-1 |
| debian | trixie | fixed | 4.3.5-1 |
References
Verify integrity in audit chain (admin only). AS-IS.