CVE-2020-25989: 
vulnerability analysis and mitigation

Privilege escalation vulnerability (CVE-2020-25989) affects Pritunl electron client versions 1.0.1116.6 through v1.2.2550.20. The vulnerability allows attackers to perform privilege escalation through arbitrary file write operations (MITRE).

The vulnerability exists due to improper file handling operations in the Pritunl electron client. The issue involves file write operations that could be exploited to escalate privileges on the affected system. The vulnerability was addressed by implementing proper file removal checks before write operations, as evidenced by the fix that adds explicit file removal steps before writing new files (GitHub Fix).

Successful exploitation of this vulnerability could allow an attacker to execute code with elevated privileges on the affected system, potentially leading to complete system compromise (MITRE).

The vulnerability requires local access to the system running the affected Pritunl electron client versions. An attacker would need to exploit the arbitrary file write capability to achieve privilege escalation (MITRE).

Users should upgrade to a version of Pritunl electron client newer than v1.2.2550.20 which contains the security fix. The fix implements proper file removal before write operations to prevent privilege escalation (GitHub Fix).