Vulnerabilities / Threats

7/13/2009
01:35 PM
Connect Directly
Google+
LinkedIn
Twitter
RSS
E-Mail
50%
50%

Microsoft Warns Of Third 'Browse-And-Get-Owned' Flaw

A third zero-day vulnerability in Microsoft's software has been identified, Microsoft said on Monday, a day before the company plans to release its July software patch.

Despite moving aggressively to fix zero-day vulnerabilities in its software, Microsoft will have to move faster still to keep up with criminal hackers. One day before the company plans to release its July patch and fix two "browser-and-get-owned" vulnerabilities, a third "browse-and-get owned" flaw has been reported.

On Monday, Microsoft issued a Security Advisory about a previously undisclosed vulnerability in Office Web Components Spreadsheet ActiveX control (OWC 10 and OWC11).

"The vulnerability exists specifically in the Spreadsheet ActiveX Control and could allow an attacker who successfully exploited this vulnerability the same user rights as the local user," the Microsoft advisory states. "We are aware of limited, active attacks attempting to exploit this vulnerability."

Last week, Microsoft issued a Security Advisory about a vulnerability in its Video ActiveX Control.

Microsoft security engineer Fermin J. Serna said in a post on the company's Security Research & Defense blog that a "browse and get owned" scenario exists, but the user would have to visit a malicious Web site for this to happen.

Microsoft has provided a workaround, a "Fix It" link that disables the vulnerable components. It's unlikely that Microsoft will have time to test a fix to include in the patch it plans to issue tomorrow.

The two vulnerable components are not installed by default, but they can be installed with Office XP, Office 2003, Office 2007, BizTalk, ISA Server, or Office Accounting and Business Contact Manager.

On Windows Server 2003 and Windows Server 2008, a possible attack is likely to be less effective. That's because the default configurations for those two Windows operating systems include something called Enhanced Security Configuration, which prevents ActiveX controls from loading in the Internet Zone when browsing.

Users of Internet Explorer 7 or 8 who visit a malicious Web site attempting to exploit this vulnerability without the vulnerable components installed should see a gold bar prompt asking permission to install the components.

If that happens, just say no.

Black Hat is like no other security conference. It happens in Las Vegas, July 25-30. Find out more and register.

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
Mobile Malware Incidents Hit 100% of Businesses
Dawn Kawamoto, Associate Editor, Dark Reading,  11/17/2017
3 Ways to Retain Security Operations Staff
Oliver Rochford, Vice President of Security Evangelism at DFLabs,  11/20/2017
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
Managing Cyber-Risk
An online breach could have a huge impact on your organization. Here are some strategies for measuring and managing that risk.
Flash Poll
The State of Ransomware
The State of Ransomware
Ransomware has become one of the most prevalent new cybersecurity threats faced by today's enterprises. This new report from Dark Reading includes feedback from IT and IT security professionals about their organization's ransomware experiences, defense plans, and malware challenges. Find out what they had to say!
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2017-0290
Published: 2017-05-09
NScript in mpengine in Microsoft Malware Protection Engine with Engine Version before 1.1.13704.0, as used in Windows Defender and other products, allows remote attackers to execute arbitrary code or cause a denial of service (type confusion and application crash) via crafted JavaScript code within ...

CVE-2016-10369
Published: 2017-05-08
unixsocket.c in lxterminal through 0.3.0 insecurely uses /tmp for a socket file, allowing a local user to cause a denial of service (preventing terminal launch), or possibly have other impact (bypassing terminal access control).

CVE-2016-8202
Published: 2017-05-08
A privilege escalation vulnerability in Brocade Fibre Channel SAN products running Brocade Fabric OS (FOS) releases earlier than v7.4.1d and v8.0.1b could allow an authenticated attacker to elevate the privileges of user accounts accessing the system via command line interface. With affected version...

CVE-2016-8209
Published: 2017-05-08
Improper checks for unusual or exceptional conditions in Brocade NetIron 05.8.00 and later releases up to and including 06.1.00, when the Management Module is continuously scanned on port 22, may allow attackers to cause a denial of service (crash and reload) of the management module.

CVE-2017-0890
Published: 2017-05-08
Nextcloud Server before 11.0.3 is vulnerable to an inadequate escaping leading to a XSS vulnerability in the search module. To be exploitable a user has to write or paste malicious content into the search dialogue.