CVE-2023-33534
📋 TL;DR
This CSRF vulnerability in Guanzhou Tozed Kangwei Intelligent Technology ZLTS10G software allows attackers to take over user accounts by tricking authenticated users into submitting a malicious POST request. It affects users of version S10G_3.11.6 who access the vulnerable web interface. Attackers can perform actions as the victim user without their consent.
💻 Affected Systems
- Guanzhou Tozed Kangwei Intelligent Technology ZLTS10G
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete account takeover leading to unauthorized access, data theft, or device compromise.
Likely Case
Attacker gains control of user accounts to modify settings, access sensitive data, or perform unauthorized actions.
If Mitigated
Limited impact with proper CSRF protections, but still potential for session hijacking if other vulnerabilities exist.
🎯 Exploit Status
Exploit requires user interaction but is straightforward once malicious page is crafted.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Monitor vendor for updates and apply when released.
🔧 Temporary Workarounds
Implement CSRF Tokens
allAdd anti-CSRF tokens to all state-changing forms and validate them server-side.
SameSite Cookie Attribute
allSet SameSite=Strict or Lax on session cookies to prevent cross-site requests.
Set-Cookie: session=value; SameSite=Strict; Secure; HttpOnly
🧯 If You Can't Patch
- Isolate the device on a separate network segment with restricted access.
- Implement web application firewall (WAF) rules to block malicious POST requests to /goform/goform_set_cmd_process.
🔍 How to Verify
Check if Vulnerable:
Check if version is S10G_3.11.6 via web interface or device management. Test for CSRF by attempting to submit a POST request to /goform/goform_set_cmd_process without proper tokens.Check Version:
Check web interface login page or device management console for version information.Verify Fix Applied:
Verify that POST requests to /goform/goform_set_cmd_process require and validate CSRF tokens. Confirm SameSite cookie attributes are set.📡 Detection & Monitoring
Log Indicators:
- Multiple failed POST requests to /goform/goform_set_cmd_process from unusual sources.
- Unusual account activity or configuration changes without user login events.
Network Indicators:
- POST requests to /goform/goform_set_cmd_process with suspicious referer headers or missing CSRF tokens.
SIEM Query:
source="web_logs" AND uri="/goform/goform_set_cmd_process" AND method="POST" AND (referer NOT CONTAINS "expected_domain" OR csrf_token MISSING)