Reachable Assertion in dnsdist - CVE-2024-25581
Published: May 13, 2024
Vulnerability identifier: #VU89380
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2024-25581
CWE-ID: CWE-617
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
dnsdist
dnsdist
Software vendor:
PowerDNS.COM B.V.
PowerDNS.COM B.V.
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a reachable assertion 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. A remote attacker can send a specially crafted request for a zone transfer
(AXFR or IXFR) over DNS over HTTPS and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.