vulnerability
Arch Linux: Denial of service (CVE-2020-25829)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:N/A:P) | Oct 16, 2020 | Jul 11, 2025 | Nov 27, 2025 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
Oct 16, 2020
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
An issue has been found in PowerDNS Recursor before 4.3.5 where 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 installations that always validate (dnssec=validate) and for clients requesting validation when on-demand validation is enabled (dnssec=process).
Solution
arch-linux-upgrade-latest
References
- CVE-2020-25829
- https://attackerkb.com/topics/CVE-2020-25829
- URL-http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00036.html
- URL-https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-07.html
- URL-https://downloads.powerdns.com/patches/2020-07/any-cache-update-4.3.4.diff
- URL-https://security.archlinux.org/ASA-202010-6
- URL-https://security.gentoo.org/glsa/202012-19
- URL-https://www.openwall.com/lists/oss-security/2020/10/13/3
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