The getaddrinfo function in glibc before 2.15, when compiled with libidn and the AI_IDN flag is used, allows context-dependent attackers to cause a denial of service (invalid free) and possibly execute arbitrary code via unspecified vectors, as demonstrated by an internationalized domain name to ping6.
Vulnerabilidad en la función getaddrinfo en glibc en versiones anteriores a 2.15, cuando es compilado con libidn y es utilizado el indicador AI_IDN, permite a atacantes dependientes de contexto provocar una denegación de servicio (liberación de memoria no válida) y posiblemente ejecutar código arbitrario a través de vectores no especificados, según lo demostrado en un nombre de dominio internacionalizado para ping6.
An invalid free flaw was found in glibc's getaddrinfo() function when used with the AI_IDN flag. A remote attacker able to make an application call this function could use this flaw to execute arbitrary code with the permissions of the user running the application. Note that this flaw only affected applications using glibc compiled with libidn support.
