7.5

CVE-2024-25581: powerdns dnsdist Improper Input Validation

CVSS: 7.5v3.1HighDeferred
AliasesDEBIAN-CVE-2024-25581openSUSE-SU-2024:13958-1
Published 13-05-2024Last modified 13-02-2025
Open JSON

Vulnerability summary

CVE-2024-25581 is a high (CVSS 7.5) Improper Input Validation vulnerability in powerdns dnsdist. EPSS estimates a 1.08% chance of exploitation in the next 30 days, higher than 64.5% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
1.08%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 13-05-2024
    PublishedVulnerability first disclosed.
  2. 13-02-2025
    Last modifiedVulnerability information updated.

Description

When incoming DNS over HTTPS support is enabled using the nghttp2 provider, and queries are routed to a tcp-only or DNS over TLS backend, an attacker can trigger an assertion failure in DNSdist by sending a request for a zone transfer (AXFR or IXFR) over DNS over HTTPS, causing the process to stop and thus leading to a Denial of Service. DNS over HTTPS is not enabled by default, and backends are using plain DNS (Do53) by default.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

1.08%

Chance of exploitation in the next 30 days

Percentile

65%

Versus all other CVEs

30-day change

0.00 pp

From 1.08% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.08%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • dnsdist< 1.9.4-1
Opensuse1 product
  • dnsdist&distro=openSUSE Tumbleweed< 1.9.4-1.1
Powerdns1 product
  • dnsdist1.9.0 | 1.9.1 | 1.9.2 | 1.9.3

3 vendors · 3 products

References

4 links