Risk
2/18/2009
04:04 PM
Connect Directly
Google+
LinkedIn
Twitter
RSS
E-Mail
50%
50%

Microsoft Internet Explorer 7 Vulnerability Being Exploited

Cyber criminals are using a malicious Microsoft Word file distributed through spam to attack an exploit Microsoft patched last week.

US-CERT, the government's cybersecurity arm, is warning users of Microsoft Internet Explorer 7 about a Trend Micro report claiming that cybercriminals are attacking Internet Explorer 7 through a vulnerability disclosed and patched by Microsoft last week.

"Cybercriminals are actively exploiting a critical vulnerability in Internet Explorer 7, which arises from the browser's improper handling of errors when attempting to access deleted objects," said Trend Micro's Jake Soriano in a blog post on Tuesday. "This vulnerability allows remote attackers to execute arbitrary codes on a vulnerable machine."

Microsoft designated Security Bulletin MS09-002 to be "critical" and gave the vulnerability a score of 1 on its Exploitability Index, indicating that functioning exploit code was expected.

According to Trend Micro, the attack begins with a malicious Microsoft Word (.doc) file distributed through spam. It contains an ActiveX control that reaches out to a malicious site that exploits the vulnerability patched by MS09-002.

If the system attacked is unpatched, the ActiveX control, identified as HTML_DLOADER.AS, will download a secret back door, identified as BKDR_AGENT.XYMS, designed to steal information from the compromised system. It also takes screenshots of the affected system and sends these to a remote location, and it will listen for commands through a hidden Internet Explorer window.

"Although the install base of the IE family is slowly eaten up by stiff competition such as Firefox and Chrome, IE7 is used by about one in every four Web users, a much larger share than previous versions of IE," observes Soriano. "This could explain why cybercriminals seem to be eagerly searching for more bugs."


InformationWeek has published an in-depth report on overhauling Microsoft. Download the report here (registration required).

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-2015-0279
Published: 2015-03-26
JBoss RichFaces before 4.5.4 allows remote attackers to inject expression language (EL) expressions and execute arbitrary Java code via the do parameter.

CVE-2015-0635
Published: 2015-03-26
The Autonomic Networking Infrastructure (ANI) implementation in Cisco IOS 12.2, 12.4, 15.0, 15.2, 15.3, and 15.4 and IOS XE 3.10.xS through 3.13.xS before 3.13.1S allows remote attackers to spoof Autonomic Networking Registration Authority (ANRA) responses, and consequently bypass intended device an...

CVE-2015-0636
Published: 2015-03-26
The Autonomic Networking Infrastructure (ANI) implementation in Cisco IOS 12.2, 12.4, 15.0, 15.2, 15.3, and 15.4 and IOS XE 3.10.xS through 3.13.xS before 3.13.1S allows remote attackers to cause a denial of service (disrupted domain access) via spoofed AN messages that reset a finite state machine,...

CVE-2015-0637
Published: 2015-03-26
The Autonomic Networking Infrastructure (ANI) implementation in Cisco IOS 12.2, 12.4, 15.0, 15.2, 15.3, and 15.4 and IOS XE 3.10.xS through 3.13.xS before 3.13.1S allows remote attackers to cause a denial of service (device reload) via spoofed AN messages, aka Bug ID CSCup62315.

CVE-2015-0638
Published: 2015-03-26
Cisco IOS 12.2, 12.4, 15.0, 15.2, and 15.3, when a VRF interface is configured, allows remote attackers to cause a denial of service (interface queue wedge) via crafted ICMPv4 packets, aka Bug ID CSCsi02145.

Dark Reading Radio
Archived Dark Reading Radio
Good hackers--aka security researchers--are worried about the possible legal and professional ramifications of President Obama's new proposed crackdown on cyber criminals.