Risk
2/18/2009
04:04 PM
Connect Directly
LinkedIn
Twitter
Google+
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
Dark Reading December Tech Digest
Experts weigh in on the pros and cons of end-user security training.
Flash Poll
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2014-7178
Published: 2014-11-28
Enalean Tuleap before 7.5.99.6 allows remote attackers to execute arbitrary commands via the User-Agent header, which is provided to the passthru PHP function.

CVE-2014-7850
Published: 2014-11-28
Cross-site scripting (XSS) vulnerability in the Web UI in FreeIPA 4.x before 4.1.2 allows remote attackers to inject arbitrary web script or HTML via vectors related to breadcrumb navigation.

CVE-2014-8423
Published: 2014-11-28
Unspecified vulnerability in the management portal in ARRIS VAP2500 before FW08.41 allows remote attackers to execute arbitrary commands via unknown vectors.

CVE-2014-8424
Published: 2014-11-28
ARRIS VAP2500 before FW08.41 does not properly validate passwords, which allows remote attackers to bypass authentication.

CVE-2014-8425
Published: 2014-11-28
The management portal in ARRIS VAP2500 before FW08.41 allows remote attackers to obtain credentials by reading the configuration files.

Best of the Web
Dark Reading Radio
Archived Dark Reading Radio
Now that the holiday season is about to begin both online and in stores, will this be yet another season of nonstop gifting to cybercriminals?