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The pexecquery function in src/dnsquery.c in pdnsd before 1.2.7-par allows remote attackers to cause a denial of service (daemon crash) via a long DNS reply with many entries in the answer section, related to a "dangling pointer bug."
Buffer overflow in Paul Rombouts pdnsd before 1.2.4 has unknown impact and attack vectors. NOTE: this issue might be related to the OUSPG PROTOS DNS test suite.
Memory leak in Paul Rombouts pdnsd before 1.2.4 allows remote attackers to cause a denial of service (memory consumption) via a DNS query with an unsupported (1) QTYPE or (2) QCLASS, as demonstrated by the OUSPG PROTOS DNS test suite.