PowerDNS Dnsdist

Out-of-bounds read in cache inspection via Lua

dnsdist version 1.1.0 is vulnerable to a flaw in authentication mechanism for REST API potentially allowing CSRF attack.

Off-by-one access when processing crafted UDP responses

Out-of-bounds read when parsing DNS packets via Lua

Out-of-bounds read in service discovery

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.

Out-of-bounds write when rewriting large DNS packets

Use after free when parsing EDNS options in Lua

Insufficient input validation of internal webserver

Insufficient input validation of internal webserver

Denial of service via crafted DNSCrypt query

Resource exhaustion via DoQ/DoH3 connections

Outgoing DoH excessive memory allocation

DoQ/DoH3 excessive memory allocation

PRSD detection denial of service

Unbounded memory allocation for DoQ and DoH3

TCP backend stream ID overflow

DNS over HTTPS ACL bypass

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 'useClientSubnet' or the experimental 'addXPF' parameters are used when declaring a new backend.

Information disclosure via CORS misconfiguration

HTML injection in the web dashboard