A few days after leakage of Red Star OS North Korea to the West, in the form of an ISO, security researchers have begun to expose its vulnerabilities.
According this publication in Seclists, the udev rules in US version 3.0 and the rc.sysint script in version 2.0 are so people with enrollments. Both have root privilege.
Because of the Red Star 3.0 file permissions management, the HP LaserJet Device Manager (1000 Series) device rules (/etc/udev/rules.d/85-hplj10xx.rules) can be modified to RUN + = arguments . These commands can be executed in the udev daemon as root. There is a presentation at GitHub.
Udev's main job is to monitor / dev (devices) directory, and when the device is connected to a door USB, loads the appropriate ruleset.
By writing to the rc.sysint file at oldest Red Star OS 2.0, an attacker can execute commands as root (demonstration).
Both vulnerabilities provide privilege escalation for local users.
Download it redstar_desktop3.0_sign.iso
