CVE-2020-25829: opensuse backports_sle
Vulnerability summary
CVE-2020-25829 is a high (CVSS 7.5) vulnerability in opensuse backports_sle. EPSS estimates a 6.54% chance of exploitation in the next 30 days, higher than 93.7% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 3 · Related 2Timeline
- 16-10-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
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).
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
6.54%
Chance of exploitation in the next 30 days
Percentile
94%
Versus all other CVEs
30-day change
0.00 pp
From 6.54% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Opensuse2 products
- backports_sle15.0:sp1 | 15.0:sp2
- leapEOL15.1 | 15.2
Debian1 product
- pdns-recursor< 4.3.5-1
Mageia1 product
- pdns-recursor< 4.1.18-1.mga7
Powerdns1 product
- recursor< 4.1.18 | ≥ 4.2.0, < 4.2.5 | ≥ 4.3.0, < 4.3.5
Ubuntu1 product
- pdns-recursorAll versions (No fix recorded)
5 vendors · 6 products
References
9 links- docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-07.htmlX Refsource CONFIRMAdvisoryREPORTVendor Advisory
- lists.opensuse.org/opensuse-security-announce/2020-10/msg00036.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
