CVE-2011-4971

Múltiples errores de signo de enteros en funciones (1) process_bin_sasl_auth, (2) process_bin_complete_sasl_auth, (3) process_bin_update, and (4) process_bin_append_prepend de Memcached 1.4.5 y anteriores permite a atacantes remotos provocar una denegación de servicio (caída) a través de un gran valor de longitud de cuerpo en un paquete.

Stefan Bucur discovered that Memcached incorrectly handled certain large body lengths. A remote attacker could use this issue to cause Memcached to crash, resulting in a denial of service. Jeremy Sowden discovered that Memcached incorrectly handled logging certain details when the -vv option was used. An attacker could use this issue to cause Memcached to crash, resulting in a denial of service. It was discovered that Memcached incorrectly handled SASL authentication. A remote attacker could use this issue to bypass SASL authentication completely. This issue only affected Ubuntu 12.10, Ubuntu 13.04 and Ubuntu 13.10. Various other issues were also addressed.