EDGE 2015 is starting in

Find out more EDGE 2015
Menu
Windows Small Business Server at risk from critical flaw

Windows Small Business Server at risk from critical flaw

Microsoft now says that Windows Small Business Server 2003 is vulnerable to the MS08-001 vulnerability patched earlier this month.

Microsoft said Wednesday that another one of its operating system products is vulnerable to a critical vulnerability, first patched two weeks ago.

In an update to its MS08-001 security bulletin, Microsoft said that the latest release of Windows Small Business Server was also critically at risk from a bug in Windows' networking software.

The flaw is also considered critical for Windows XP and Vista users. Microsoft did not say why it had initially omitted Small Business Server from its list of critically affected operating systems, but it said that the product's users were being offered patches via Microsoft's various automatic update services. "Customers with Windows Small Business Server 2003 Service Pack 2 should apply the update to remain secure," Microsoft said in its updated bulletin.

The bug lies in the way Windows processes networking traffic that uses IGMP (Internet Group Management Protocol) and MLD (Multicast Listener Discovery) protocols, which are used to send data to many systems at the same time. Microsoft said that an attacker could send specially crafted packets to a victim's machine, which could then allow the attacker to run unauthorized code on a system.

Microsoft rates the flaw as "important" for Windows Server 2003, meaning that it would be more difficult for attackers to exploit the flaw on this operating system.

Security experts are paying particular attention to this vulnerability because it could be exploited by attackers to create a self-replicating worm attack.

The flaw is not being exploited in online attacks, but last week researchers at penetration-testing-software vendor Immunity made a sample exploit available to their customers. That software causes an unpatched system to crash, but the company is close to developing code that could be used to install unauthorized software on a victim's computer, according to Immunity Chief Technology Officer Dave Aitel.

Aitel said it's no surprise that the small business version of Windows Server 2003 is at risk.

"I assumed most 2003 servers in the real world were vulnerable," he said via instant message. "Windows Server 2003 by default does not have any multicast addresses active and would not be affected by this vulnerability. However, installing applications that use multicasting could cause the operating system to become vulnerable."

He said that Microsoft could help its customers by giving them more details on how to avoid being at risk to this problem. "What features can I enable on Windows Server 2003 to become vulnerable?" he asked.

EDGE 2015:: For all the latest on EDGE 2015 including the keynote speakers visit the EDGE mini-site now

Follow Us

Join the ARN newsletter!

Error: Please check your email address.

Upcoming

Slideshows

In Pictures: 7 things we hate about Twitter

In Pictures: 7 things we hate about Twitter

You probably either love Twitter for its quirkiness and brevity or see it as a pointless waste of time. After nearly a decade on the social scene, Twitter still needs to improve its user experience and fill in notable gaps in the service. These seven problems are long overdue for a fix.

In Pictures: 7 things we hate about Twitter
IN PICTURES: EDGE 2015 - Sponsor Briefing

IN PICTURES: EDGE 2015 - Sponsor Briefing

With EDGE 2015 rapidly approaching, ARN and Reseller News NZ held a Sponsors Briefing where ARN publisher and president, Susan Searle, and Events Manager, Alexandra West, ran through the considerable logistics in detail. Attendees then enjoyed some splendid canapes and drinks. EDGE is designed to bring the A/NZ channel together in a collaborative and educational environment. Themed around channel channel leadership, EDGE will be held at the Sheraton Mirage, Port Douglas, July 20-23. Photos by MIKE GEE.

IN PICTURES: EDGE 2015 - Sponsor Briefing
In Pictures: Robots that cook, clean, sing and dance

In Pictures: Robots that cook, clean, sing and dance

Cooking, learning language and doing the laundry are a few of the human skills demonstrated by.real humanoid bots featured in the National Geographic movie Robots.

In Pictures: Robots that cook, clean, sing and dance

iasset.com is a channel management ecosystem that automates all major aspects of the entire sales, marketing and service process, including data tracking, integrated learning, knowledge management and product lifecycle management.

Show Comments