advisory#4 /--------------------------------------------------------------------/ Vendor: Microsoft Corp. product: windows (only tested on winxp.pro.ed) test machine: win.xp.pro.ed ie.6 (fully patched) Discovery by: Roozbeh Afrasiabi [roozbeh_afrasiabi(At)yahoo(dot)com] Risk: med Title: Desktop.ini flaw results in executing folders /--------------------------------------------------------------------/ TABLE OF CONTENTS: ================== Description..............................................1 Exploit..................................................2 Contact info.............................................3 Disclaimer...............................................4 1)Description: ================== Certain system folders on windows(XP) are created using desktop.ini by use of their CLSIDs , this is done by setting the CLSID value of the shellclassinfo in desktop.ini to their assigned CLSIDs , however there is no restriction to what CLSIDs are safe and can be used, this could bring up security issues when CLSIDs that point to executables are set as the CLSID value. This vulnerability effects IEXPLORE.EXE and EXPLORER.exe and may result in execution of malicious code in the context of the currently logged in user. 2)Exploit =========== http://www.freewebs.com/roozbeh_afrasiabi/xploit/execute.htm 3)Contact Info ================== roozbeh_afrasiabi(at)yahoo(dot)com da_stone_cold_killer(at)yahoo(dot)com me@persia-fars-shiraz -----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1.2.1 (MingW32) - WinPT 0.7.96rc1 mQGiBEBVbGoRBACT+S7j6awJjH8ctpioGfdmQzfwxd/M5vcafFpWjYTb2g4NINfB gzbXFANzOMDcXhmrQysvgeFl7smhFVKDl0c7dtsqvgn5pydfXRCljZwrSQAwE/PS vSSzV7QhEI5zLWkpieyjZhlxCYtHlxma36pBx3ZpPPDfAFNpW0QBB94rxwCgoZO9 TR/YXs19bOipfffI02dv758EAILHfEHXNkb050yaU8y47JJXl64OOnQcwgNafLa4 cEyYSRYwkZUqnBX6xmB/hy8J9AnmED7tjKLSqrupJivrxueSwbNom+QN2cPpWv+i MZXGgMLZAOrlAi4R7gGBAIq7K+Ow0Z4/FQMH3Aryw9WkBlDK7bChfLeoAXNrQAWG kfgKA/47WQN0SAD9KSmbdMB6q8EE7sD7vYkZWIg+j4JJaWskdN7qCbSB6EBnWKQb 6gE2999nlphhmcUjS1TgjUgCLHjQ9lMIWr0Zec8NmcZyEVnEKgjHK7MkvocLpT7h zYkVMO9HLecllYr6FrnNtWpOw/X7FVhSkNIKgNNZQ0Z3Xi3Z57RQcm9vemJlaCBh ZnJhc2lhYmkgKHJvb3piZWhfYWZyYXNpYWJpQHlhaG9vLmNvbSkgPGRhX3N0b25l X2NvbGRfa2lsbGVyQHlhaG9vLmNvbT6IWQQTEQIAGQUCQFVsagQLBwMCAxUCAwMW AgECHgECF4AACgkQLh+KhhfWhDXgTwCeKAVoNkUjYqBbWu+l3WfArf4+vwkAoIjx rBC/FnLEJDuSJ5SuLho04QtOuOsEQFVscwEHAL5OyxFo1eAwGijoPfIwQPINLuvr bo7WVzwGmUXvvZsbLvMjc80zdUD2PaZr1kurZwqE13If+XzpNZdlFfmjtYKST+s8 8lwnzK2ososE0m4uT1MatHQxK3HNKIDRUOg7TC8PaPD+FUYntcdUYs3bdror7179 kOIfM7/ZtCQuWoqFMOZiCTd7PUSgmEXsUWoNzlNmGJmZMgSc0MtAFiGDys3sA5fK 8JyOA0rQHvmcne1Xh9P4aA9+mutSGnx/4mFPYLdDFBA5go5B0XOPrjQelxQlRAAU xmWk0kgx+X25WRK/AAYpiEYEGBECAAYFAkBVbHMACgkQLh+KhhfWhDUH4wCfZ/83 xkEvaT1IWeaDemU5dYAysPsAnRP6Qyw1DM3gHhxl6m+bjEwPX6AG =q+hK -----END PGP PUBLIC KEY BLOCK----- 4)Disclaimer ================== Roozbeh Afrasiabi is not responsible for the misuse of the information provided in this report. In no event shall the author be liable for any damages whatsoever arising out of or in connection with the use or spread of this advisory. Any use of the information is at the user's own risk. All Rights Reserved