Vulnerabilities / Threats
11/3/2010
06:35 PM
Connect Directly
LinkedIn
Twitter
Google+
RSS
E-Mail
50%
50%

Microsoft Issues Zero-Day IE Warning

Internet Explorer 9 is not affected and the risk is not significant enough to prompt an emergency patch.

Microsoft on Wednesday said it is investigating reports of a vulnerability in all supported versions of Internet Explorer, which is to say IE 6 through 8.

"The vulnerability exists due to an invalid flag reference within Internet Explorer," Microsoft said in a security advisory. "It is possible under certain conditions for the invalid flag reference to be accessed after an object is deleted. In a specially-crafted attack, in attempting to access a freed object, Internet Explorer can be caused to allow remote code execution."

Internet Explorer 9, available for public beta testing, is not affected.

Microsoft says that the Data Execution Prevention (DEP) technology included in Internet Explorer 8 and Protected Mode, in Windows Vista and 7, will help mitigate the threat posed by this vulnerability.

In a post on the Microsoft Security Response Center blog, Microsoft group manager of response communications Jerry Bryant says that the exploit code was discovered on a single Web site which is no longer serving the code. He says that the issue is not serious enough to merit an out-of-band (emergency) patch.

HD Moore, CSO at Rapid7 and chief architect of the Metasploit framework concurs. In an e-mailed statement, he said that there are better options for drive-by attacks than this particular exploit.

In an analysis of the exploit, Symantec security researcher Vikram Thakur notes that those behind the attacks sent malicious code to individuals at a select group of targeted organizations. Victims received e-mail messages with a link to a malicious Web page that had been added to a legitimate Web site. Those visiting the page with a vulnerable browser provided the attacker(s) with the ability to execute remote code.

Based on a captured snapshot of the network traffic sent and received by the malicious code, Thakur suggests that portions of the attack were directed by a person rather than a script. "Looking at the flow of commands, it is obvious to us that someone is entering these commands manually from a remote computer," he said.

Comment  | 
Print  | 
More Insights
Register for Dark Reading Newsletters
White Papers
Cartoon
Current Issue
Flash Poll
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2012-1503
Published: 2014-08-29
Cross-site scripting (XSS) vulnerability in Six Apart (formerly Six Apart KK) Movable Type (MT) Pro 5.13 allows remote attackers to inject arbitrary web script or HTML via the comment section.

CVE-2013-5467
Published: 2014-08-29
Monitoring Agent for UNIX Logs 6.2.0 through FP03, 6.2.1 through FP04, 6.2.2 through FP09, and 6.2.3 through FP04 and Monitoring Server (ms) and Shared Libraries (ax) 6.2.0 through FP03, 6.2.1 through FP04, 6.2.2 through FP08, 6.2.3 through FP01, and 6.3.0 through FP01 in IBM Tivoli Monitoring (ITM)...

CVE-2014-0600
Published: 2014-08-29
FileUploadServlet in the Administration service in Novell GroupWise 2014 before SP1 allows remote attackers to read or write to arbitrary files via the poLibMaintenanceFileSave parameter, aka ZDI-CAN-2287.

CVE-2014-0888
Published: 2014-08-29
IBM Worklight Foundation 5.x and 6.x before 6.2.0.0, as used in Worklight and Mobile Foundation, allows remote authenticated users to bypass the application-authenticity feature via unspecified vectors.

CVE-2014-0897
Published: 2014-08-29
The Configuration Patterns component in IBM Flex System Manager (FSM) 1.2.0.x, 1.2.1.x, 1.3.0.x, and 1.3.1.x uses a weak algorithm in an encryption step during Chassis Management Module (CMM) account creation, which makes it easier for remote authenticated users to defeat cryptographic protection me...

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.