CVE-2018-1122

procps-ng en versiones anteriores a la 3.3.15 es vulnerable a un escalado de privilegios locales en top. Si un usuario ejecuta top sin establecer HOME en un directorio controlado por el atacante, este podría lograr el escalado de privilegios explotando una de las varias vulnerabilidades existentes en la función config_file().

If the HOME environment variable is unset or empty, top will read its configuration file from the current working directory without any security check. If a user runs top with HOME unset in an attacker-controlled directory, the attacker could achieve privilege escalation by exploiting one of several vulnerabilities in the config_file() function.

Qualys performed an extensive audit of procps-ng. They discovered hundreds of bugs and vulnerabilities.