The p_exec_query function in src/dns_query.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."

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.

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.