Vulnerabilities / Threats
11/12/2009
07:21 PM
Connect Directly
LinkedIn
Twitter
Google+
RSS
E-Mail
50%
50%

Microsoft Investigating Zero-Day Windows 7 Flaw

The vulnerability was released the day after Microsoft issued its November patches.

Security researcher Laurent Graffie mocked Microsoft's Secure Development Lifecycle process in a blog post on Wednesday in which he published proof-of-concept exploit code that he claims can crash Windows 7 and Windows Server 2008 R2.

"This bug is a real proof that SDL #FAIL," he wrote, adding "The bug is so noob it should have been spotted 2 years ago by the SDL if the SDL [had] ever existed."

The vulnerability appears to reside in Microsoft's Windows Sever Message Block (SMB) software.

Microsoft patched a previous SMB vulnerability in late September, one that Graffie disclosed -- irresponsibly, Microsoft claimed -- earlier that month.

Responsible disclosure generally involves notifying software vendors about vulnerabilities so they can create a patch before the information becomes public.

In the case of Graffie's latest find, he says that he notified Microsoft on November 8 and released his proof-of-concept code on November 11.

In an e-mailed statement, Christopher Budd, security response communications lead at Microsoft, said that the company is investigating a possible denial-of-service vulnerability in Windows Server Message Block.

"We're currently unaware of any attacks trying to use the claimed vulnerability or of customer impact," he said. "Once we're done investigating, we will take appropriate action to help protect customers. This may include providing a security update through the monthly release process, an out-of-cycle update or additional guidance to help customers protect themselves."

Simon Price, writing for the Praetorian Perfect blog, claims to have tested the exploit successfully.

"The operating system actually freezes," he said. "There is no error message, no blue screen of death, no indication that anything has gone wrong. Even after power cycling, the event logs show no sign of a mishap, aside from the typical events generated from booting up again."

How are you dealing with data-centric security? Answer our survey by Friday, Nov. 13, and be eligible to win an iPod Touch. Click here to take part.

Comment  | 
Print  | 
More Insights
Register for Dark Reading Newsletters
White Papers
Flash Poll
Current Issue
Cartoon
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2014-0761
Published: 2014-08-27
The DNP3 driver in CG Automation ePAQ-9410 Substation Gateway allows remote attackers to cause a denial of service (infinite loop or process crash) via a crafted TCP packet.

CVE-2014-0762
Published: 2014-08-27
The DNP3 driver in CG Automation ePAQ-9410 Substation Gateway allows physically proximate attackers to cause a denial of service (infinite loop or process crash) via crafted input over a serial line.

CVE-2014-2380
Published: 2014-08-27
Schneider Electric Wonderware Information Server (WIS) Portal 4.0 SP1 through 5.5 uses weak encryption, which allows remote attackers to obtain sensitive information by reading a credential file.

CVE-2014-2381
Published: 2014-08-27
Schneider Electric Wonderware Information Server (WIS) Portal 4.0 SP1 through 5.5 uses weak encryption, which allows local users to obtain sensitive information by reading a credential file.

CVE-2014-3344
Published: 2014-08-27
Multiple cross-site scripting (XSS) vulnerabilities in the web framework in Cisco Transport Gateway for Smart Call Home (aka TG-SCH or Transport Gateway Installation Software) 4.0 allow remote attackers to inject arbitrary web script or HTML via unspecified parameters, aka Bug IDs CSCuq31129, CSCuq3...

Best of the Web
Dark Reading Radio
Archived Dark Reading Radio
This episode of Dark Reading Radio looks at infosec security from the big enterprise POV with interviews featuring Ron Plesco, Cyber Investigations, Intelligence & Analytics at KPMG; and Chris Inglis & Chris Bell of Securonix.