CVE-2024-48073
📋 TL;DR
CVE-2024-48073 is a critical privilege escalation vulnerability in sunniwell HT3300 devices where the update program has insecure sudo permissions and command injection flaws. Attackers can exploit this to execute arbitrary commands with root privileges. All users of affected HT3300 devices are at risk.
💻 Affected Systems
- sunniwell HT3300
⚠️ 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
Full system compromise with root access, allowing installation of persistent backdoors, data theft, and use as a pivot point in networks.
Likely Case
Local attackers gaining root privileges to modify system configurations, install malware, or access sensitive data on the device.
If Mitigated
Limited impact if proper network segmentation and access controls prevent unauthorized users from accessing the device.
🎯 Exploit Status
Exploit requires some level of access to execute commands, but the privilege escalation path is straightforward once initial access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.0.0.B022.2
Vendor Advisory: Not provided in references
Restart Required: Yes
Instructions:
1. Contact sunniwell for updated firmware version 1.0.0.B022.2 or later. 2. Backup device configuration. 3. Apply firmware update following vendor instructions. 4. Verify update completed successfully.
🔧 Temporary Workarounds
Remove insecure sudo permissions
linuxRemove NOPASSWD sudo permission for the vulnerable update program
sudo visudo
Remove line: 'username ALL=(ALL) NOPASSWD: /usr/local/bin/update'
Restrict update program permissions
linuxChange ownership and permissions to restrict who can execute the vulnerable program
sudo chown root:root /usr/local/bin/update
sudo chmod 750 /usr/local/bin/update
🧯 If You Can't Patch
- Implement strict network segmentation to isolate HT3300 devices from critical networks
- Apply principle of least privilege and restrict user access to only necessary personnel
🔍 How to Verify
Check if Vulnerable:
Check sudoers file for NOPASSWD permission on /usr/local/bin/update: sudo cat /etc/sudoers | grep updateCheck Version:
Check device firmware version through web interface or CLI if availableVerify Fix Applied:
Verify firmware version is 1.0.0.B022.2 or later and check sudoers file no longer contains vulnerable entry📡 Detection & Monitoring
Log Indicators:
- Unusual sudo usage patterns
- Execution of /usr/local/bin/update with unexpected arguments
- Failed authentication attempts followed by successful privilege escalation
Network Indicators:
- Unexpected outbound connections from HT3300 device
- Unusual traffic patterns to/from the device
SIEM Query:
source="HT3300" AND (event="sudo" AND command="/usr/local/bin/update") OR (process="/usr/local/bin/update" AND args!="expected_args")