CVE-2018-8778

En 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, un atacante que controla el formato de desempaquetado (similar a las vulnerabilidades de cadena de formato) puede desencadenar una sublectura de búfer en el método String#unpack. Esto resulta en una gran divulgación de información controlada.

A integer underflow was found in the way String#unpack decodes the unpacking format. An attacker, able to control the unpack format, could use this flaw to disclose arbitrary parts of the application's memory.

It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this to execute arbitrary code. It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this to access sensitive information. It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this to connect to an unintended socket. Various other issues were also addressed.