CVE-2012-2143

La función crypt_des (también conocido como crypt basado en DES), en FreeBSD v9.0-RELEASE-p2, tal y como se utiliza en PHP, PostgreSQL y otros productos, no procesa las contraseñas en claro si la contraseña contiene un carácter de 0x80, lo que hace más fácil para los atacantes dependientes del contexto a la hora de obtener acceso a través de un intento de autenticación con una subcadena inicial con la contraseña, tal y como se demuestra con una contraseña Unicode.

There is a programming error in the DES implementation used in crypt() in ext/standard/crypt_freesec.c when handling input which contains characters that can not be represented with 7-bit ASCII. When the input contains characters with only the most significant bit set (0x80), that character and all characters after it will be ignored. An integer overflow, leading to heap-based buffer overflow was found in the way Phar extension of the PHP scripting language processed certain fields by manipulating TAR files. A remote attacker could provide a specially-crafted TAR archive file, which once processed in an PHP application using the Phar extension could lead to denial of service , or, potentially arbitrary code execution with the privileges of the user running the application. The updated php packages have been upgraded to the 5.3.14 version which is not vulnerable to these issues.