Multiple buffer overflows in MyDNS 1.1.0 allow remote attackers to (1) cause a denial of service (daemon crash) and possibly execute arbitrary code via a certain update, which triggers a heap-based buffer overflow in update.c; and (2) cause a denial of service (daemon crash) via unspecified vectors that trigger an off-by-one stack-based buffer overflow in update.c.

Unspecified vulnerability in MyDNS 1.1.0 allows remote attackers to cause a denial of service via a crafted DNS message, aka "Query-of-death," as demonstrated by the OUSPG PROTOS DNS test suite.

Unspecified "critical denial-of-service vulnerability" in MyDNS before 1.1.0 has unknown impact and attack vectors.

Multiple implementations of the DNS protocol, including (1) Poslib 1.0.2-1 and earlier as used by Posadis, (2) Axis Network products before firmware 3.13, and (3) Men & Mice Suite 2.2x before 2.2.3 and 3.5.x before 3.5.2, allow remote attackers to cause a denial of service (CPU and network bandwidth consumption) by triggering a communications loop via (a) DNS query packets with localhost as a spoofed source address, or (b) a response packet that triggers a response packet.