CVE-2015-0244

PostgreSQL versiones anteriores a 9.0.19, versiones 9.1.x anteriores a 9.1.15, versiones 9.2.x anteriores a 9.2.10, versiones 9.3.x anteriores a 9.3.6 y versiones 9.4.x anteriores a 9.4.1, no maneja apropiadamente los errores al leer un mensaje de protocolo, lo que permite a atacantes remotos conducir ataques de inyección SQL por medio de datos binarios diseñados en un parámetro y causar un error, lo que desencadena la pérdida de sincronización y parte del mensaje del protocolo es tratado como un mensaje nuevo, como es demostrado al causar un tiempo de espera o la cancelación de la consulta.

A flaw was found in the way PostgreSQL handled certain errors that were generated during protocol synchronization. An authenticated database user could use this flaw to inject queries into an existing connection.

Multiple vulnerabilities has been discovered and corrected in Stephen Frost discovered that PostgreSQL incorrectly displayed certain values in error messages. An authenticated user could gain access to seeing certain values, contrary to expected permissions. Andres Freund, Peter Geoghegan and Noah Misch discovered that PostgreSQL incorrectly handled buffers in to_char functions. An authenticated attacker could possibly use this issue to cause PostgreSQL to crash, resulting in a denial of service, or possibly execute arbitrary code. It was discovered that PostgreSQL incorrectly handled memory in the pgcrypto extension. An authenticated attacker could possibly use this issue to cause PostgreSQL to crash, resulting in a denial of service, or possibly execute arbitrary code. Emil Lenngren discovered that PostgreSQL incorrectly handled extended protocol message reading. An authenticated attacker could possibly use this issue to cause PostgreSQL to crash, resulting in a denial of service, or possibly inject query messages. This advisory provides the latest version of PostgreSQL that is not vulnerable to these issues.