Description
Wowza Streaming Engine 4.5.0 contains a local privilege escalation vulnerability that allows authenticated users to escalate privileges by replacing executable files due to improper file permissions granting full access to the Everyone group. Attackers can replace the nssm_x64.exe binary in the manager and engine service directories with malicious executables to execute code with LocalSystem privileges when services restart.
Problem types
Authorization Bypass Through User-Controlled Key
Product status
Credits
LiquidWorm as Gjoko Krstic of Zero Science Lab
References
www.exploit-db.com/exploits/40132 (ExploitDB-40132)
www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5339.php (Vulnerability Advisory)
www.vulncheck.com/...l-privilege-escalation-via-nssm-x64-exe (VulnCheck Advisory: Wowza Streaming Engine 4.5.0 Local Privilege Escalation via nssm_x64.exe)