CVE-2024-57968
📋 TL;DR
This vulnerability in Advantive VeraCore allows authenticated remote users to upload files to unintended folders, potentially exposing sensitive files to other users via web browsing. It affects VeraCore versions before 2024.4.2.1. The high CVSS score of 9.9 indicates critical severity.
💻 Affected Systems
- Advantive VeraCore
📦 What is this software?
Veracore by Advantive
⚠️ Risk & Real-World Impact
Worst Case
Attackers could upload malicious files (e.g., web shells) to accessible directories, leading to complete system compromise, data theft, or ransomware deployment.
Likely Case
Unauthorized file exposure leading to data leakage, privilege escalation, or malware distribution within the application.
If Mitigated
Limited to authenticated users only, reducing exposure but still allowing insider threats or compromised accounts to exploit.
🎯 Exploit Status
Exploited by XE Group in the wild; requires authenticated access but is straightforward to execute.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2024.4.2.1
Vendor Advisory: https://advantive.my.site.com/support/s/article/VeraCore-Release-Notes-2024-4-2-1
Restart Required: Yes
Instructions:
1. Backup system and data. 2. Download and install VeraCore version 2024.4.2.1 from the vendor. 3. Restart the application server. 4. Verify the patch is applied by checking the version.
🔧 Temporary Workarounds
Restrict upload.aspx access
allTemporarily block or restrict access to the upload.aspx endpoint using web server rules or firewall.
# Example for IIS: Use URL Rewrite to block upload.aspx
# Example for Apache: Use .htaccess to deny access to upload.aspx
Implement file upload validation
allAdd server-side validation to restrict file uploads to specific, secure directories and file types.
# Custom code implementation required; no universal command
🧯 If You Can't Patch
- Monitor and audit file upload activities, especially via upload.aspx, for suspicious patterns.
- Restrict user permissions to minimize the number of authenticated users who can upload files.
🔍 How to Verify
Check if Vulnerable:
Check the VeraCore version; if it is earlier than 2024.4.2.1, it is vulnerable. Review application logs for unauthorized file upload attempts.Check Version:
Check the application's admin panel or configuration files for version information; no universal command available.Verify Fix Applied:
Confirm the version is 2024.4.2.1 or later by checking the application settings or release notes. Test file upload functionality to ensure it restricts to intended folders.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads via upload.aspx
- Access to unexpected directories in web logs
- Failed or successful upload attempts from unauthorized users
Network Indicators:
- HTTP POST requests to upload.aspx with file payloads
- Traffic spikes to upload endpoints
SIEM Query:
source="web_logs" AND uri="/upload.aspx" AND (method="POST" OR status=200)🔗 References
- https://advantive.my.site.com/support/s/article/VeraCore-Release-Notes-2024-4-2-1
- https://intezer.com/blog/research/xe-group-exploiting-zero-days/
- https://www.solissecurity.com/en-us/insights/xe-group-from-credit-card-skimming-to-exploiting-zero-days/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-57968
