A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current version of pkexec doesn't handle the calling parameters count correctly and ends trying to execute environment variables as commands. An attacker can leverage this by crafting environment variables in such a way it'll induce pkexec to execute arbitrary code. When successfully executed the attack can cause a local privilege escalation giving unprivileged users administrative rights on the target machine.
This module allow to set a short name 8.3 of a file when you don't have write privileges to the directory where the file is located.The vulnerability exists due to NtfsSetShortNameInfo does not properly impose security restrictions in NTFS Set Short Name, which leads to security restrictions bypass and privilege escalation.