CVE-2009-3094

La función ap_proxy_ftp_handler en modules/proxy/proxy_ftp.c en el módulo mod_proxy_ftp en Apache HTTP Server v2.0.63 y v2.2.13, permite a servidores FTP remotos provocar una denegación de servicio (referencia a puntero NULL o caída de proceso hijo) a través de una respuesta mal formada al comando EPSV.

The ap_proxy_ftp_handler function in modules/proxy/proxy_ftp.c in the mod_proxy_ftp module in the Apache HTTP Server 2.0.63 and 2.2.13 allows remote FTP servers to cause a denial of service (NULL pointer dereference and child process crash) via a malformed reply to an EPSV command. The mod_proxy_ftp module in the Apache HTTP Server allows remote attackers to bypass intended access restrictions and send arbitrary commands to an FTP server via vectors related to the embedding of these commands in the Authorization HTTP header, as demonstrated by a certain module in VulnDisco Pack Professional 8.11. NOTE: as of 20090903, this disclosure has no actionable information. However, because the VulnDisco Pack author is a reliable researcher, the issue is being assigned a CVE identifier for tracking purposes. This update provides a solution to these vulnerabilities.