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TITLE:
CellCtrl Read & Write Excel ActiveX Control "Login()" Buffer Overflow
Vulnerability

SECUNIA ADVISORY ID:
SA46144

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/46144/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=46144

RELEASE DATE:
2011-09-23

DISCUSS ADVISORY:
http://secunia.com/advisories/46144/#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/46144/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=46144

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 a vulnerability in CellCtrl, which can
be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to a boundary error in the "Login()"
method of the Read & Write Excel ActiveX control (RWXls.RWXlsCtrl.2).
This can be exploited to cause a stack-based buffer overflow via an
overly long string passed in the "Password" parameter.

Successful exploitation may allow execution of arbitrary code.

The vulnerability is confirmed in version 5.3.9.15 (YRWXls.ocx
5.3.7.321). Other versions may also be affected.

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

PROVIDED AND/OR DISCOVERED BY:
Luigi Auriemma

ORIGINAL ADVISORY:
http://aluigi.altervista.org/adv/forcecontrol_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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Please Note:
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Secunia NEVER sends attached files with advisories.
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use those supplied by the vendor.

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