CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 0CVE-2025-30193 – Denial of service via crafted TCP exchange
https://notcve.org/view.php?id=CVE-2025-30193
20 May 2025 — In some circumstances, when DNSdist is configured to allow an unlimited number of queries on a single, incoming TCP connection from a client, an attacker can cause a denial of service by crafting a TCP exchange that triggers an exhaustion of the stack and a crash of DNSdist, causing a denial of service. The remedy is: upgrade to the patched 1.9.10 version. A workaround is to restrict the maximum number of queries on incoming TCP connections to a safe value, like 50, via the setMaxTCPQueriesPerConnection set... • https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-03.html • CWE-674: Uncontrolled Recursion •
CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 0CVE-2025-30194 – Denial of service via crafted DoH exchange
https://notcve.org/view.php?id=CVE-2025-30194
29 Apr 2025 — When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service. The remedy is: upgrade to the patched 1.9.9 version. A workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version. We would like to thank Charles Howes for bringing this issue to our attention. • https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-02.html • CWE-416: Use After Free •
CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 0CVE-2024-25581 – Transfer requests received over DoH can lead to a denial of service in DNSdist
https://notcve.org/view.php?id=CVE-2024-25581
13 May 2024 — 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. Cuando la compatibilidad con DNS entrante sobre HTTPS está habilitada mediante... • http://www.openwall.com/lists/oss-security/2024/05/13/1 • CWE-20: Improper Input Validation •
CVSS: 5.9EPSS: 0%CPEs: 1EXPL: 0CVE-2018-14663
https://notcve.org/view.php?id=CVE-2018-14663
26 Nov 2018 — An issue has been found in PowerDNS DNSDist before 1.3.3 allowing a remote attacker to craft a DNS query with trailing data such that the addition of a record by dnsdist, for example an OPT record when adding EDNS Client Subnet, might result in the trailing data being smuggled to the backend as a valid record while not seen by dnsdist. This is an issue when dnsdist is deployed as a DNS Firewall and used to filter some records that should not be received by the backend. This issue occurs only when either the... • https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14663 • CWE-20: Improper Input Validation •
CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0CVE-2016-7069
https://notcve.org/view.php?id=CVE-2016-7069
11 Sep 2018 — An issue has been found in dnsdist before 1.2.0 in the way EDNS0 OPT records are handled when parsing responses from a backend. When dnsdist is configured to add EDNS Client Subnet to a query, the response may contain an EDNS0 OPT record that has to be removed before forwarding the response to the initial client. On a 32-bit system, the pointer arithmetic used when parsing the received response to remove that record might trigger an undefined behavior leading to a crash. Se ha descubierto un problema en dns... • http://www.securityfocus.com/bid/100509 • CWE-20: Improper Input Validation •
CVSS: 8.8EPSS: 0%CPEs: 1EXPL: 0CVE-2017-7557
https://notcve.org/view.php?id=CVE-2017-7557
22 Aug 2017 — dnsdist version 1.1.0 is vulnerable to a flaw in authentication mechanism for REST API potentially allowing CSRF attack. dnsdist versión 1.1.0 es vulnerable a un error en el mecanismo de autenticación para la API REST, permitiendo potencialmente ataques de tipo Cross-Site Request Forgery (CSRF). • http://www.securityfocus.com/bid/100508 • CWE-287: Improper Authentication CWE-352: Cross-Site Request Forgery (CSRF) •