Application Security
6/30/2008
05:35 PM
Connect Directly
Google+
LinkedIn
Twitter
RSS
E-Mail
50%
50%

Microsoft Internet Explorer Vulnerability Warning Issued

The flaw focuses on IE's inline frames, often used for serving ads, which typically come from a different domain than content that appears on the same Web page.

Microsoft's Internet Explorer 6, 7, and 8 beta 1 appear to contain a security flaw that could subject users who visit a malicious Web site or open a malicious e-mail message to arbitrary code.

U.S. CERT has published a vulnerability note indicating Internet Explorer doesn't handle document frames securely.

Document frames can be used to subdivide Web pages such that the content associated with each division comes from a different server or domain. These "iframes," or inline frames, often are used for serving ads, which typically come from a different domain than content that appears on the same Web page.

The problem, as U.S. CERT describes it, is that "Microsoft Internet Explorer fails to properly restrict access to a document's frames, which may allow an attacker to modify the contents of frames in a different domain."

IE includes restrictions that limit the information one frame can get from another, but it appears that certain events, such as the "onmousedown" event, are not associated with a specific domain and thus are not sufficiently restricted.

Secunia, a computer security firm, on Thursday published a security advisory warning that Internet Explorer 7.x is vulnerable to a frame location handling vulnerability. It said that other versions of IE may also be affected.

The U.S. CERT vulnerability note says that Internet Explorer 6, 7, and 8 beta 1 are vulnerable and that proof-of-concept code has been published.

The proof-of-concept code was first published in May at a Web site maintained by "sirdarckcat." It can be used to hijack an iframe window and capture keystrokes.

According to Bill Sisk, communications manager for Microsoft security response, Microsoft is investigating reports of a possible vulnerability in Internet Explorer. The company is unaware of any attacks trying to use the claimed vulnerability or of customer impact.

Comment  | 
Print  | 
More Insights
Register for Dark Reading Newsletters
White Papers
Flash Poll
Current Issue
Cartoon
DevOpsí Impact on Application Security
DevOpsí Impact on Application Security
Managing the interdependency between software and infrastructure is a thorny challenge. Often, itís a ďdevelopers are from Mars, systems engineers are from VenusĒ situation.
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2014-1544
Published: 2014-07-23
Use-after-free vulnerability in the CERT_DestroyCertificate function in libnss3.so in Mozilla Network Security Services (NSS) 3.x, as used in Firefox before 31.0, Firefox ESR 24.x before 24.7, and Thunderbird before 24.7, allows remote attackers to execute arbitrary code via vectors that trigger cer...

CVE-2014-1547
Published: 2014-07-23
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 31.0, Firefox ESR 24.x before 24.7, and Thunderbird before 24.7 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

CVE-2014-1548
Published: 2014-07-23
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 31.0 and Thunderbird before 31.0 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

CVE-2014-1549
Published: 2014-07-23
The mozilla::dom::AudioBufferSourceNodeEngine::CopyFromInputBuffer function in Mozilla Firefox before 31.0 and Thunderbird before 31.0 does not properly allocate Web Audio buffer memory, which allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow and applica...

CVE-2014-1550
Published: 2014-07-23
Use-after-free vulnerability in the MediaInputPort class in Mozilla Firefox before 31.0 and Thunderbird before 31.0 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) by leveraging incorrect Web Audio control-message ordering.

Best of the Web
Dark Reading Radio
Archived Dark Reading Radio
Sara Peters hosts a conversation on Botnets and those who fight them.