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TITLE:
BroadWin WebAccess Client Bwocxrun ActiveX Control Multiple
Vulnerabilities

SECUNIA ADVISORY ID:
SA45820

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/45820/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=45820

RELEASE DATE:
2011-09-02

DISCUSS ADVISORY:
http://secunia.com/advisories/45820/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/45820/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
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https://ca.secunia.com/?page=viewadvisory&vuln_id=45820

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
Luigi Auriemma has discovered multiple vulnerabilities in BroadWin
WebAccess Client, which can be exploited by malicious people to
compromise a user's system.

1) A format string error in the "OcxSpool()" method (bwocxrun.ocx)
can be exploited to corrupt memory via a specially crafted string.

2) An error in the "WriteTextData()" method (bwocxrun.ocx) when
handling an open file descriptor can be exploited to corrupt memory
by passing an arbitrary integer value in the "fpt" parameter.

3) An error in the "CloseFile()" method (bwocxrun.ocx) when handling
an open file descriptor can be exploited to corrupt memory by passing
an arbitrary integer value in the "fpt" parameter.

Successful exploitation of these vulnerabilities may allow execution
of arbitrary code.

The vulnerabilities are confirmed in bwocxrun.ocx version 1.0.0.10
included in WebAccess Client version 7.0. Other versions may also be
affected.

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

PROVIDED AND/OR DISCOVERED BY:
Luigi Auriemma

ORIGINAL ADVISORY:
http://aluigi.altervista.org/adv/bwocxrun_1-adv.txt

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

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