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Linux-Server-Management-Too…/modules/security
Developer e01ee36e6f Additional critical fixes: malware-scanner.sh - input validation & error handling
ADDITIONAL ISSUES FIXED (7 major issues):

1. MISSING INPUT VALIDATION - Lines 2743, 2785
   - Domain input now validated with regex (prevents injection, special chars)
   - Custom path now validated for existence and readability
   - Rejects invalid domain formats before processing

2. MALDET AVAILABILITY CHECK - Line 3035
   - maldet_scan_submenu() now verifies maldet is installed before running
   - Prevents crashes when user selects maldet menu but scanner isn't installed
   - Shows helpful message directing user to installation

3. DIRECTORY CREATION ERROR HANDLING - Line 1283
   - mkdir now checks for success, returns error on failure
   - chmod also checked with error handling
   - Prevents silent failures when /opt not writable or disk full

4. SESSION DIRECTORY RACE CONDITION - Line 1273
   - Added $$  (process ID) and $RANDOM to session naming
   - Prevents collision when multiple users run simultaneously
   - Unique naming: malware-YYYYMMDD-HHMMSS-PID-RANDOM

5. CONTROL PANEL DETECTION VALIDATION - Line 2598
   - Added check to verify control panel not "unknown" after detection
   - Prevents scanning with wrong directory structure
   - Shows clear error message with remediation steps

6. ARRAY BOUNDS VALIDATION - Line 3347
   - Check available_scanners array not empty before displaying
   - Prevents crashes when no scanners installed
   - Shows helpful message to install scanners first

7. CUSTOM PATH READABILITY - Line 2793
   - Validates path is readable (not just existent)
   - Prevents scanning paths with permission errors

VALIDATION & TESTING:
✓ Syntax validation passed
✓ All input validation patterns tested
✓ Error handling branches verified
✓ Race condition fix verified (unique naming)

CODE QUALITY IMPROVEMENTS:
- Better error messages guide user to solutions
- Defensive programming prevents crashes
- Input sanitization prevents injection attacks
- Array bounds checked before access
2026-04-21 22:42:08 -04:00
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