High severity · published May 13, 2024
CVE-2024-25581
Transfer requests received over DoH can lead to a denial of service in DNSdist
7.5
CVSS
1.1%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DN
DNSdist · PowerDNS
1.9.0; 1.9.1; 1.9.2; 1.9.3 · source: vendor, CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-25581
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-25581
www.openwall.com
http://www.openwall.com/lists/oss-security/2024/05/13/1
dnsdist.org
https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2024-03.html
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