CVE-2015-0243

Múltiples desbordamientos del búfer en contrib/pgcrypto en 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, permiten usuarios autenticados remotos causar una denegación de servicio (bloqueo) y posiblemente ejecutar código arbitrario por medio de vectores no especificados.

A stack-buffer overflow flaw was found in PostgreSQL's pgcrypto module. An authenticated database user could use this flaw to cause PostgreSQL to crash or, potentially, execute arbitrary code with the permissions of the user running PostgreSQL.

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.