Internet Explorer 6.0 SP1 and earlier, and possibly other versions, allows remote attackers to cause a denial of service (application crash from "memory corruption") via certain malformed Cascading Style Sheet (CSS) elements that trigger heap-based buffer overflows, as demonstrated using the "<STYLE>@;/*" string, possibly due to a missing comment terminator that may cause an invalid length to trigger a large memory copy operation, aka the "CSS Heap Memory Corruption Vulnerability."
Mozilla Firefox 0.9.2 allows web sites to set cookies for country-specific top-level domains, such as .ltd.uk, .plc.uk, and .sch.uk, which could allow remote attackers to perform a session fixation attack and hijack a user's HTTP session. NOTE: it was later reported that 2.x is also affected.
Microsoft Internet Explorer 6.0, Outlook 2002, and Outlook 2003 allow remote attackers to cause a denial of service (CPU consumption), if "Do not save encrypted pages to disk" is disabled, via a web site or HTML e-mail that contains two null characters (%00) after the host name.
The execCommand method in Microsoft Internet Explorer 6.0 SP2 allows remote attackers to bypass the "File Download - Security Warning" dialog and save arbitrary files with arbitrary extensions via the SaveAs command.
Integer overflow in the Install Engine (inseng.dll) for Internet Explorer 5.01, 5.5, and 6 allows remote attackers to execute arbitrary code via a malicious website or HTML email with a long .CAB file name, which triggers the integer overflow when calculating a buffer length and leads to a heap-based buffer overflow.
Internet Explorer 5.5 and 6 does not properly handle plug-in navigation, which allows remote attackers to alter displayed address bars and thereby spoof web pages, facilitating phishing attacks, aka the "Plug-in Navigation Address Bar Spoofing Vulnerability."
Internet Explorer 6 on Double Byte Character Set (DBCS) systems allows remote attackers to alter displayed address bars and spoof web pages via a URL containing special characters, facilitating phishing attacks, aka the "Address Bar Spoofing on Double Byte Character Set Systems Vulnerability."
Internet Explorer 5.01, 5.5, and 6 does not properly cache SSL content, which allows remote attackers to obtain information or spoof content via a web site with the same host name as the target web site, whose content is cached and reused when the user visits the target web site.
Internet Explorer 6.0 allows web sites to set cookies for country-specific top-level domains, such as .ltd.uk, .plc.uk, and .sch.uk, which could allow remote attackers to perform a session fixation attack and hijack a user's HTTP session.
Internet Explorer does not prevent cookies that are sent over an insecure channel (HTTP) from also being sent over a secure channel (HTTPS/SSL) in the same domain, which could allow remote attackers to steal cookies and conduct unauthorized activities, aka "Cross Security Boundary Cookie Injection."