----------------------------------------------------------------------

BETA test the new Secunia Personal Software Inspector!

The Secunia PSI detects installed software on your computer and
categorises it as either Insecure, End-of-Life, or Up-To-Date.
Effectively enabling you to focus your attention on software
installations where more secure versions are available from the
vendors.

Download the free PSI BETA from the Secunia website:
https://psi.secunia.com/

----------------------------------------------------------------------

TITLE:
Yahoo! Messenger YVerInfo.dll ActiveX Control Buffer Overflow

SECUNIA ADVISORY ID:
SA26579

VERIFY ADVISORY:
http://secunia.com/advisories/26579/

CRITICAL:
Highly critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
Yahoo! Messenger 8.x
http://secunia.com/product/12122/

DESCRIPTION:
A vulnerability has been reported in Yahoo! Messenger, which can be
exploited by malicious people to compromise a user's system.

The vulnerability is caused due to a boundary error within the
YVerInfo.dll ActiveX control and can be exploited to cause a buffer
overflow e.g. when a user is tricked into viewing a malicious web
page.

Successful exploitation may allow execution of arbitrary code.

The vulnerability is reported in YVerInfo.dll versions prior to
2007.8.27.1 included in Yahoo! Messenger downloaded before
2007-08-29.

SOLUTION:
Update to version 8.1.0.419.
http://messenger.yahoo.com/download.php

PROVIDED AND/OR DISCOVERED BY:
The vendor credits iDefense Labs.

ORIGINAL ADVISORY:
http://messenger.yahoo.com/security_update.php?id=082907

----------------------------------------------------------------------

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:
http://secunia.com/secunia_security_advisories/

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.

----------------------------------------------------------------------

Unsubscribe: Secunia Security Advisories
http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org

----------------------------------------------------------------------