Title: Multiple Vendor IMG Tag DoS Vulnerability
Severity: MODERATE
Description:
An issue which affects users of multiple web browsers on Microsoft Windows platforms has been discovered.
Multiple malicious IMG tags may cause a denial of services to users who view webpages they are embedded into. Any medium which allows web users to embed a sufficient amount of HTML code that will be displayed to other users(forums, guestbooks, etc.) is a potential attack vehicle for a malicious user. Additionally, malicious webmasters may construct webpages which exploit this vulnerability.
This vulnerability is exploited by constructing an excessive number of IMG tags that include a unique 'mailto:' link. When the web user opens a page with this type of malicious content then affected browsers will be forced to open e-mail compose windows for each unique 'mailto:' link. At the very least this attack will cause the user's browser to crash, but if system resources are exhausted enough then it is possible to crash the entire machine of the victim.
Affected Products:
- Microsoft Internet Explorer 3.0.0 for Windows 95
- Microsoft Internet Explorer 3.0.0 for Windows NT 4.0
- Microsoft Internet Explorer 3.0.1 for Windows 95
- Microsoft Internet Explorer 3.0.1 for Windows NT 4.0
- Microsoft Internet Explorer 3.0.2 for Windows 95
- Microsoft Internet Explorer 3.0.2 for Windows NT 4.0
- Microsoft Internet Explorer 3.2.0 for Windows 95
- Microsoft Internet Explorer 3.2.0 for Windows NT 4.0
- Microsoft Internet Explorer 4.0.0
- Microsoft Internet Explorer 4.0.0 for Windows 95
- Microsoft Internet Explorer 4.0.0 for Windows NT 4.0
- Microsoft Internet Explorer 4.0.1
- Microsoft Internet Explorer 4.0.1 for Windows 98
- Microsoft Internet Explorer 4.0.1 for Windows NT 4.0
- Microsoft Internet Explorer 4.0.1SP2
- Microsoft Internet Explorer 4.1.0 for Windows 95
- Microsoft Internet Explorer 4.1.0 for Windows 98
- Microsoft Internet Explorer 4.1.0 for Windows NT 4.0
- Microsoft Internet Explorer 5.0
- Microsoft Internet Explorer 5.0 for Windows 2000
- Microsoft Internet Explorer 5.0 for Windows 95
- Microsoft Internet Explorer 5.0 for Windows 98
- Microsoft Internet Explorer 5.0 for Windows NT 4.0
- Microsoft Internet Explorer 5.0.1
- Microsoft Internet Explorer 5.0.1 SP1
- Microsoft Internet Explorer 5.0.1 SP2
- Microsoft Internet Explorer 5.0.1 for Windows 2000
- Microsoft Internet Explorer 5.0.1 for Windows 95
- Microsoft Internet Explorer 5.0.1 for Windows 98
- Microsoft Internet Explorer 5.5
- Microsoft Internet Explorer 5.5 SP1
- Microsoft Internet Explorer 5.5.0 preview
- Microsoft Windows 2000 Professional
- Microsoft Windows 2000 Professional SP1
- Microsoft Windows 2000 Professional SP2
- Microsoft Windows 2000 Terminal Services
- Microsoft Windows 95
- Microsoft Windows 98
- Microsoft Windows 98SE
- Microsoft Windows ME
- Microsoft Windows NT 4.0
- Netscape Communicator 0.0.04.06
- Netscape Communicator 0.0.04.07
- Netscape Communicator 0.0.04.08
- Netscape Communicator 4.0.0
- Netscape Communicator 4.4.0
- Netscape Communicator 4.5.0
- Netscape Communicator 4.5.0BETA
- Netscape Communicator 4.51.0
- Netscape Communicator 4.6.0
- Netscape Communicator 4.61.0
- Netscape Communicator 4.7.0
- Netscape Communicator 4.72.0
- Netscape Communicator 4.73.0
- Netscape Communicator 4.74.0
- Netscape Communicator 4.75.0
- Netscape Communicator 4.76.0
- Netscape Communicator 4.77.0
- Netscape Communicator 4.78.0
- SGI IRIX 6.5.11
- SGI IRIX 6.5.12
- SGI IRIX 6.5.13
- SGI IRIX 6.5.14
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