CVE-2024-25581CWE-20

Transfer requests received over DoH can lead to a denial of service in DNSdist

High · published May 13, 2024

CVSS v3.1
7.5
EPSS
1%
Percentile
64.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.01078 · 64.8th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2024-05-13T11:49Z
EPSS history
Timeline
  • 13 MAY 11:49Z
    Transfer requests received over DoH can lead to a denial of service in DNSdist
    cvelistv5