CVE-2024-7828
📋 TL;DR
A critical buffer overflow vulnerability in D-Link NAS devices allows remote attackers to execute arbitrary code by manipulating the album_name parameter in the photocenter_mgr.cgi script. This affects multiple end-of-life D-Link NAS models that are no longer supported by the vendor. Attackers can exploit this without authentication to potentially take full control of affected devices.
💻 Affected Systems
- D-Link DNS-120
- DNR-202L
- DNS-315L
- DNS-320
- DNS-320L
- DNS-320LW
- DNS-321
- DNR-322L
- DNS-323
- DNS-325
- DNS-326
- DNS-327L
- DNR-326
- DNS-340L
- DNS-343
- DNS-345
- DNS-726-4
- DNS-1100-4
- DNS-1200-05
- DNS-1550-04
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, data theft, ransomware deployment, or use as a botnet node.
Likely Case
Remote code execution allowing attackers to install malware, exfiltrate data, or pivot to internal networks.
If Mitigated
Limited impact if devices are isolated behind firewalls with strict network controls, though risk remains due to lack of patches.
🎯 Exploit Status
Public exploit code is available on GitHub. The vulnerability requires no authentication and has simple exploitation steps, making it attractive for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: None
Vendor Advisory: https://supportannouncement.us.dlink.com/security/publication.aspx?name=SAP10383
Restart Required: No
Instructions:
No official patch is available. D-Link has confirmed these products are end-of-life and recommends retiring and replacing them.
🔧 Temporary Workarounds
Disable Photo Center CGI
linuxRemove or disable access to the vulnerable photocenter_mgr.cgi script
rm /cgi-bin/photocenter_mgr.cgi
chmod 000 /cgi-bin/photocenter_mgr.cgi
Block CGI Directory Access
linuxConfigure firewall or web server to block access to /cgi-bin/ directory
iptables -A INPUT -p tcp --dport 80 -m string --string "/cgi-bin/photocenter_mgr.cgi" --algo bm -j DROP
🧯 If You Can't Patch
- Immediately disconnect affected devices from the internet and isolate them on internal networks
- Replace all affected devices with supported alternatives as soon as possible
🔍 How to Verify
Check if Vulnerable:
Check if device model is in affected list and has /cgi-bin/photocenter_mgr.cgi accessible via web interfaceCheck Version:
Check web interface admin panel or use nmap to identify device model and firmwareVerify Fix Applied:
Verify photocenter_mgr.cgi is no longer accessible or has been removed📡 Detection & Monitoring
Log Indicators:
- HTTP requests to /cgi-bin/photocenter_mgr.cgi with long album_name parameters
- Unusual process execution or file creation following CGI access
Network Indicators:
- HTTP POST requests to photocenter_mgr.cgi with oversized parameters
- Sudden outbound connections from NAS devices
SIEM Query:
source="nas_logs" AND url="/cgi-bin/photocenter_mgr.cgi" AND (param_length>100 OR status_code=500)