Vulnerability in zoneminder

[ Why it matters ]Priority signals

• Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official description

ZoneMinder is a free, open source closed-circuit television software application. Prior to 1.38.3, the exportEvents() function concatenates the attacker-controlled exportFile request parameter into a shell command without neutralizing shell metacharacters when an authenticated user with View Events or View Snapshots permission submits an event export request with a crafted exportFile value, a valid CSRF token, and exportDetail enabled. The affected components are exportEvents(), exportFile, web/ajax/event.php, web/skins/classic/includes/export_functions.php. In this attack mechanism, the crafted exportFile value reaches the trailing directory argument of a tar or zip command executed by exec(). The attacker can execute arbitrary operating system commands as the web server user. This issue is fixed in version 1.38.3.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/ZoneMinder/zoneminder/commit/548ed87d47a49c17b4c842f6fee8a08660deb427
• github.com/ZoneMinder/zoneminder/commit/605f962b7b6ba7f5780b3e6715b5418b8b2addca
• github.com/ZoneMinder/zoneminder/releases/tag/1.38.3
• github.com/ZoneMinder/zoneminder/security/advisories/GHSA-7j62-cjxp-3cj5