How do you enable debug mode on a Zimbra server for vulnerability research?
To enable debug mode, stop the Zimbra service with 'zmcontrol stop', replace the zmmailboxdmgr script with the unrestricted version, add Java debug options via 'zmlocalconfig -e mailboxd_java_options' including JDWP agent settings (e.g., address=*:8000), disable the firewall (ufw disable), and restart the server. This allows remote debugging of Zimbra's Java components.
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**Related reading:**
- Setting up Zimbra Vulnerability Debugging Environment — original article
- Penetration Techniques - Lateral Movement via WSUS
- Penetration Techniques - Clearing Single Records in RecentFileCache.bcf and Amcache.hve
- ProxyShell Exploitation Analysis 2 - CVE-2021-34523
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**Related reading:**
- Setting up Zimbra Vulnerability Debugging Environment — original article
- Penetration Techniques - Lateral Movement via WSUS
- Penetration Techniques - Clearing Single Records in RecentFileCache.bcf and Amcache.hve
- ProxyShell Exploitation Analysis 2 - CVE-2021-34523
Zimbradebug moderemote debuggingJDWPvulnerability research