CVE-2017-17742

Ruby, en versiones anteriores a la 2.2.10, versiones 2.3.x anteriores a la 2.3.7, versiones 2.4.x anteriores a la 2.4.4, versiones 2.5.x anteriores a la 2.5.1 y la versión 2.6.0-preview1, permite un ataque de separación de respuesta HTTP. Un atacante puede inyectar una clave y un valor manipulados en una respuesta HTTP para el servidor HTTP de WEBrick.

It was found that WEBrick did not sanitize headers sent back to clients, resulting in a response-splitting vulnerability. An attacker, able to control the server's headers, could force WEBrick into injecting additional headers to a client.

Some of these CVEs were already addressed in previous USN: 3439-1, 3553-1, 3528-1. It was discovered that Ruby incorrectly handled certain inputs. An attacker could use this to cause a buffer overrun. It was discovered that Ruby incorrectly handled certain files. An attacker could use this to overwrite any file on the filesystem. Various other issues were also addressed.