CVE-2024-45248
📋 TL;DR
This CVE describes a path traversal vulnerability (CWE-35) in Multi-DNC software that allows attackers to access files outside the intended directory using '.../...//' sequences. This affects systems running vulnerable versions of Multi-DNC software, potentially exposing sensitive files and system data.
💻 Affected Systems
- Multi-DNC
⚠️ 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
Complete system compromise through arbitrary file read/write, leading to data exfiltration, privilege escalation, or remote code execution.
Likely Case
Unauthorized access to sensitive configuration files, credentials, or application data stored on the server.
If Mitigated
Limited impact with proper file permissions and input validation, potentially only exposing non-critical files.
🎯 Exploit Status
Path traversal vulnerabilities are generally straightforward to exploit with basic HTTP requests containing crafted path sequences.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched version
Vendor Advisory: https://www.gov.il/en/Departments/faq/cve_advisories
Restart Required: Yes
Instructions:
1. Review vendor advisory at provided URL. 2. Identify affected version. 3. Download and apply vendor-provided patch. 4. Restart affected services. 5. Verify fix implementation.
🔧 Temporary Workarounds
Input Validation Filter
allImplement strict input validation to reject path traversal sequences
# Example for web server config (adjust for your environment):
# Add to web server config: RewriteRule .*\.\./.* - [F]
File Permission Restriction
allRestrict application file access permissions to minimum required
# Linux: chmod 750 /path/to/app/files
# Windows: icacls "C:\app\files" /deny Everyone:(OI)(CI)(RX)
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block path traversal patterns
- Isolate affected systems in segmented network zones with strict access controls
🔍 How to Verify
Check if Vulnerable:
Test with crafted requests containing '.../...//' sequences targeting known files; monitor for unauthorized file access.Check Version:
Check application documentation for version command; typically application-specific (e.g., ./multidnc --version or check web interface)Verify Fix Applied:
Retest with same path traversal attempts; verify requests are blocked or return appropriate error responses.📡 Detection & Monitoring
Log Indicators:
- HTTP requests containing '.../', '../', or similar traversal patterns
- Unusual file access patterns from web application user context
Network Indicators:
- HTTP requests with encoded traversal sequences (%2e%2e%2f)
- Multiple failed file access attempts with traversal patterns
SIEM Query:
source="web_logs" AND (uri="*../*" OR uri="*..//*" OR uri="*.../*" OR uri="*...//*")