CVE-2017-18190

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 (neither the OS nor the web browser is responsible for ensuring that localhost.localdomain is 127.0.0.1).

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 (neither the OS nor the web browser is responsible for ensuring that localhost.localdomain is 127.0.0.1).

Una entrada en la lista blanca localhost.localdomain en valid_host() en scheduler/client.c en CUPS, en versiones anteriores a la 2.2.2, permite que atacantes remotos ejecuten comandos IPP arbitrarios mediante el envío de peticiones POST al demonio CUPS junto con reenlaces DNS. El nombre localhost.localdomain suele resolverse mediante un servidor DNS (ni el sistema operativo ni el navegador web son responsables de garantizar que localhost.localdomain sea 127.0.0.1).