A localhost.localdomain whitelist entry in valid_host in scheduler/client.c in CUPS before 2.2.2 allows remote attackers to execute arbitrary IPP commands by sending POST requests to the CUPS daemon in conjunction with DNS rebinding. The localhost.localdomain name is often resolved via a DNS server . Stack-buffer-overflow in libcups"s asn1_get_type function. Stack-buffer-overflow in libcups"s asn1_get_packed function