Xxca.ss.iexx.zip Apr 2026

Based on the structure, this appears to be a filename typical of an intentionally vulnerable machine (e.g., from Proving Grounds or Hack The Box ) or a malware analysis exercise involving a vulnerability.

Path Traversal / Arbitrary File Write (Zip Slip) XXCa.ss.ieXX.zip

Result: The file is written to /var/www/html/ instead of /var/www/html/uploads/ . 5. Remediation Recommendation Based on the structure, this appears to be

To prevent this vulnerability, sanitize all filenames during extraction. Ensure that the target extraction path is within the designated destination folder. Remediation Recommendation To prevent this vulnerability

When a vulnerable service or application extracts this file using traditional methods (e.g., directly taking the filename from the zip entry without sanitization), the application will follow the ../ instructions and write shell.php to the web root rather than the intended extraction folder. 4. Reproduction Steps (Technical) the XXCa.ss.ieXX.zip file.

the file on a target machine using a vulnerable unzip command or script: unzip XXCa.ss.ieXX.zip -d /var/www/html/uploads/ Use code with caution. Copied to clipboard Verify the file traversal: ls -la /var/www/html/shell.php Use code with caution. Copied to clipboard

/tmp/unzip/ - legitimate_file.txt - ../../../var/www/html/shell.php Use code with caution. Copied to clipboard