Software Engineering Institute

Oracle JInitiator allows users to run Oracle Developer Server applications within a web browser. Oracle JInitiator includes an ActiveX control called beans.ocx. The Oracle JInitiator ActiveX control is vulnerable to multiple stack buffer overflows in initialization parameters.

This vulnerability appears to be present in versions 1.1.8.x through 1.1.8.26 of the Oracle JInitiator software. In our testing, the 1.3.1.x versions of JInitiator do not contain these buffer overflows. However, installing a later version of the software will not remove the vulnerable version of the control.

A remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system with privileges of the user.

Apply an update
Oracle reports that this issue is resolved in the Oracle Critical Patch Update for January 2008. According to the Oracle blog, the update is also available in Patch 6612584.

Disable the Oracle JInitiator ActiveX controls in Internet Explorer

The vulnerable ActiveX controls can be disabled in Internet Explorer by setting the kill bit for the following CLSIDs:

{A2001DD0-C7BD-11D4-A3E1-00C04FA32518}
{FF348B6E-FD21-11D4-A3F0-00C04FA32518}
{689FF870-2AC0-11D5-B634-00C04FAEDB18}
{86ECB6A0-400A-11D5-B638-00C04FAEDB18}
{ED54A7B0-6C1C-11D5-B63D-00C04FAEDB18}
{0A454840-7232-11D5-B63D-00C04FAEDB18}
{9B935470-AD4A-11D5-B63E-00C04FAEDB18}
{1D2A8890-3083-11D6-B649-00C04FAEDB18}
{5E2A3510-4371-11D6-B64C-00C04FAEDB18}
{E2258010-B53C-11D6-B64D-00C04FAEDB18}
{B5859259-C40B-4B2A-AF9D-3BF0F634B1D5}
{332BD5A0-8000-11D7-B657-00C04FAEDB18}
{B13D8B3E-04A8-406F-BD35-07530D4A62DC}
{E79BC654-8FC6-4BB9-BFB8-8860779AE213}
{7C2C94F0-7991-42B4-8D5F-4CB15B490657}

More information about how to set the kill bit is available in Microsoft Support Document 240797. Alternatively, the following text can be saved as a .REG file and imported to set the kill bit for this control:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\ActiveX Compatibility\{A2001DD0-C7BD-11D4-A3E1-00C04FA32518}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\ActiveX Compatibility\{FF348B6E-FD21-11D4-A3F0-00C04FA32518}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\ActiveX Compatibility\{689FF870-2AC0-11D5-B634-00C04FAEDB18}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\ActiveX Compatibility\{86ECB6A0-400A-11D5-B638-00C04FAEDB18}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\ActiveX Compatibility\{ED54A7B0-6C1C-11D5-B63D-00C04FAEDB18}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\ActiveX Compatibility\{0A454840-7232-11D5-B63D-00C04FAEDB18}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\ActiveX Compatibility\{9B935470-AD4A-11D5-B63E-00C04FAEDB18}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\ActiveX Compatibility\{1D2A8890-3083-11D6-B649-00C04FAEDB18}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\ActiveX Compatibility\{5E2A3510-4371-11D6-B64C-00C04FAEDB18}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\ActiveX Compatibility\{E2258010-B53C-11D6-B64D-00C04FAEDB18}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\ActiveX Compatibility\{B5859259-C40B-4B2A-AF9D-3BF0F634B1D5}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\ActiveX Compatibility\{332BD5A0-8000-11D7-B657-00C04FAEDB18}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\ActiveX Compatibility\{B13D8B3E-04A8-406F-BD35-07530D4A62DC}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\ActiveX Compatibility\{E79BC654-8FC6-4BB9-BFB8-8860779AE213}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\ActiveX Compatibility\{7C2C94F0-7991-42B4-8D5F-4CB15B490657}]
"Compatibility Flags"=dword:00000400
Disable ActiveX

Disabling ActiveX controls in the Internet Zone (or any zone used by an attacker) appears to prevent exploitation of this and other ActiveX vulnerabilities. Instructions for disabling ActiveX in the Internet Zone can be found in the "Securing Your Web Browser" document.