CVE-2023-50700
📋 TL;DR
This vulnerability allows unprivileged users to execute privileged operations through D-Bus methods in Deepin's dde-file-manager. It affects Deepin Linux users running dde-file-manager version 6.0.54 and earlier. Attackers can potentially perform unauthorized system actions.
💻 Affected Systems
- Deepin dde-file-manager
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Local privilege escalation allowing unprivileged users to gain root privileges and fully compromise the system.
Likely Case
Unauthorized file operations, privilege escalation to perform administrative tasks, or system configuration changes.
If Mitigated
Limited impact with proper D-Bus policy restrictions and user isolation in place.
🎯 Exploit Status
Exploitation requires local access but is relatively straightforward via D-Bus method calls.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.0.55 or later
Vendor Advisory: https://github.com/linuxdeepin/developer-center/issues/10007
Restart Required: Yes
Instructions:
1. Update Deepin system packages. 2. Specifically update dde-file-manager to version 6.0.55 or later. 3. Restart the system or at least the D-Bus service and file manager.
🔧 Temporary Workarounds
Restrict D-Bus access
linuxModify D-Bus policy to restrict access to vulnerable dde-file-manager methods
sudo nano /etc/dbus-1/system.d/org.deepin.dde.FileManager1.conf
Add deny rules for unprivileged users
Disable vulnerable service
linuxTemporarily disable dde-file-manager D-Bus service
sudo systemctl stop dde-file-manager
sudo systemctl disable dde-file-manager
🧯 If You Can't Patch
- Implement strict user privilege separation and limit local user access
- Monitor D-Bus traffic for suspicious method calls to org.deepin.dde.FileManager1
🔍 How to Verify
Check if Vulnerable:
Check dde-file-manager version: dpkg -l | grep dde-file-manager or rpm -qa | grep dde-file-managerCheck Version:
dde-file-manager --version || dpkg -l | grep dde-file-managerVerify Fix Applied:
Verify version is 6.0.55 or later and test D-Bus method calls from unprivileged user account📡 Detection & Monitoring
Log Indicators:
- D-Bus authorization failures
- Unauthorized access attempts to org.deepin.dde.FileManager1 service
Network Indicators:
- Local D-Bus traffic spikes
- Unusual D-Bus method calls
SIEM Query:
source="d-bus" AND (service="org.deepin.dde.FileManager1" AND user!="root")🔗 References
- https://bugzilla.opensuse.org/show_bug.cgi?id=1134131
- https://bugzilla.opensuse.org/show_bug.cgi?id=1134132
- https://github.com/linuxdeepin/developer-center/issues/10007
- https://bugzilla.opensuse.org/show_bug.cgi?id=1134131
- https://bugzilla.opensuse.org/show_bug.cgi?id=1134132
- https://github.com/linuxdeepin/developer-center/issues/10007
