ZoneMinder is a free, open source closed-circuit television software application. Prior to 1.39.2, 1.38.2, and 1.36.40, ZoneMinder interpolates an unvalidated monitor Device field into shell commands in PHP and Perl control paths when an authenticated user with monitor-create or monitor-edit permission saves a Local monitor whose Device Path contains shell metacharacters and the monitor control or startup path runs. In this attack mechanism, the stored Device value reaches Perl qx() and backtick execution before zmdc.pl argument detainting, while separate PHP command paths use bypassable escapeshellcmd defenses.
The attacker can execute arbitrary commands as the web server user. This vulnerability is fixed in 1.39.2, 1.38.2, and 1.36.40.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products
zoneminder:zoneminder
References 2
https://github.com/ZoneMinder/zoneminder/security/advisories/GHSA-g66m-77fq-79v9
https://github.com/ZoneMinder/zoneminder/security/advisories/GHSA-g66m-77fq-79v9
https://github.com/ZoneMinder/zoneminder/commit/419846c8750c3f45b9b8a1df8cd49c1…
https://github.com/ZoneMinder/zoneminder/commit/419846c8750c3f45b9b8a1df8cd49c189a14dc03