Donato Ferrante Application: wMCam server http://www.invicta.se Version: 2.1.348 Bug: Denial Of Service Author: Donato Ferrante e-mail: fdonato@autistici.org web: www.autistici.org/fdonato xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 1. Description 2. The bug 3. The code 4. The fix xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx ---------------- 1. Description: ---------------- Vendor's Description: "wMCam server turns your computer into a Webcam Server." xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx ------------ 2. The bug: ------------ The server is not able to manage a lot of not regular connections, in fact it will stay up but it will not accept new connections. xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx ------------- 3. The code: ------------- To test the vulnerability establish about 300 connections with the server and send for each of these a little amount of data like: "test_string" NOTE: the data sent to the server must not contain the 'GET'. xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx ------------ 4. The fix: ------------ Bug fixed in the version 2.1.354. xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx