Incorrect default permissions in Serv-U FTP Server - CVE-2021-25276
Published: February 3, 2021
Vulnerability identifier: #VU50292
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-25276
CWE-ID: CWE-276
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to incorrect default permissions on the Windows "Users" directory. A local user with access to the system can view contents of files and obtain users' password hashes from the "%ProgramData%RhinoSoftServ-UUsers<DOMAIN>" directory.
Affected software
Serv-U FTP Server
How to mitigate CVE-2021-25276
Install updates from vendor's website.
Serv-U FTP Server - update to 15.2.2