NTA Monitor

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New version of network scanning tool arp-scan released

15th March 2011 A new version of a respected and popular network scanning tool has been released. Read More

Tests show rise in number of vulnerabilities affecting web applications with SQL Injection and XSS most common flaws

1st March 2011 SQL injection and cross-site scripting (XSS) were the most common flaws found in web applications in 2010 according to results from tests carried out by NTA Monitor. Read More

Assess risk to manage effects of budget cuts

9th February 2011 Signs of economic recovery may be appearing in some industries, but for most organisations - particularly in the public sector - budget cuts and cost savings are here to stay for the foreseeable future. Read More

"Basic security threats not changed in 15 years"

1st February 2011 There may have been significant technological advances to the hardware and software organisations use, but according to Roy Hills, who co-founded NTA Monitor in 1996, the basic security threats have not changed in the last 15 years. Read More
Date: 1st May 2007
Risk: High

A highly critical buffer overflow vulnerability has been discovered in Yahoo! Messenger, which if successfully exploited, could result in system compromise.

The vulnerability occurs due to a boundary error within the AudioConf ActiveX control (yacscom.dll) component of Yahoo! Messenger. By setting the "socksHostname" and "hostName" properties to an overly large string and subsequently calling the "createAndJoinConference()" method, the vulnerability can be exploited to cause a stack-based buffer overflow.

Yahoo! has issued a security update urging users to upgrade, which is available at:

http://messenger.yahoo.com/security_update.php?id=031207

References