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TITLE:
PDFBuilderX ActiveX Control "SaveToFile()" Arbitrary File Overwrite

SECUNIA ADVISORY ID:
SA33427

VERIFY ADVISORY:
http://secunia.com/advisories/33427/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
PDFBuilderX 2.x
http://secunia.com/advisories/product/20968/

DESCRIPTION:
Alfons Luja has discovered a vulnerability in PDFBuilderX, which can
be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to the PDFBuilderXTrial.PDFDoc
ActiveX control (PDFBuilderXTrial.ocx) providing the insecure
"SaveToFile()" method. This can be exploited to overwrite arbitrary
files on the system in the context of the currently logged-on user.

Successful exploitation allows execution of arbitrary code.

The vulnerability is confirmed in PDFBuilderXTrial.ocx version
2.2.0.1. Other versions may also be affected.

SOLUTION:
Set the kill-bit for the affected ActiveX control.

PROVIDED AND/OR DISCOVERED BY:
Alfons Luja

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