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TITLE:
IBM Lotus Domino Web Access Control ActiveX Control Buffer Overflow

SECUNIA ADVISORY ID:
SA28184

VERIFY ADVISORY:
http://secunia.com/advisories/28184/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
IBM Lotus Domino 7.x
http://secunia.com/product/5746/
IBM Lotus Domino Web Access 7.x
http://secunia.com/product/7961/

DESCRIPTION:
Elazar Broad has reported a vulnerability in IBM Lotus Domino Web
Access, which can be exploited by malicious people to compromise a
user's system.

The vulnerability is caused due to a boundary error in the
dwa7.dwa7.1 ActiveX control (dwa7W.dll) when handling strings
assigned to the "General_ServerName" property. This can be exploited
to cause a stack-based buffer overflow by assigning an overly long
string to the affected property and then calling the
"InstallBrowserHelperDll()" method.

Successful exploitation allows execution of arbitrary code.

The vulnerability is reported in dwa7W.dll version 7.0.34.1. Other
versions may also be affected.

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

PROVIDED AND/OR DISCOVERED BY:
Elazar Broad

ORIGINAL ADVISORY:
http://lists.grok.org.uk/pipermail/full-disclosure/2007-December/059233.html

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

Subscribe:
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Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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