Disclosure date:  08/26/19

CVE-2019-15720

CloudBerry Backup v6.1.2.34 and possibly older versions are vulnerable to local privilege escalation via the Pre and Post backup action.  With only user level access, the user can modify the backup plan and add a Pre backup action script which executes on behalf of NT AUTHORITY\SYSTEM.

Cloudberry Lab was notified of this vulnerability on 8/23/19 and acknowledged the issue in the subsequent days.

If it hasn't been obvious from my latest round of posts, I've been trying to improve my bug hunting skills. Essentially, I've been finding applications with recently disclosed vulnerabilities, installing the current version, and then hunting for more vulnerabilities. My thinking is that if there's one recent bug, there are probably more.  At the very least, I should be able to find a cross site scripting vulnerability (XSS).

XSS is the equivalent of hacker graffiti but if you can steal the session cookie, you can possibly turn that into session hijacking and / or cross site request forgery (CSRF). That makes things a little more interesting than just an alert message.

I saw a recently vulnerability discovered in Kimai which is a time tracking application. I fired up Kimai on a server and I started to poke around.

MyT Project Management 1.5.1 and possibly before are affected by a cross site scripting vulnerability that can be leveraged for session hijacking.  An attacker can leverage the XSS vulnerability, retrieve the session cookie from the administrator login, and take over the administrator account.