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Title: Multiple Vendor HTML Form Protocol Vulnerability

Severity: MODERATE

Description:

Browsers from multiple vendors are prone to a vulnerability that may allow submitting data to any port on an arbitrary machine. This attack may be initiated with JavaScript when a victim views a malicious page or HTML email.

An attacker may exploit the issue by hosting a crafted HTML page and enticing an unsuspecting user to visit it. The crafted HTML page may contain malicious form data which will be sent to a server that uses an ASCII-based protocol such SMTP, NNTP, POP3, IMAP, and IRC. The malicious form data may contain remote commands which will be passed to a pertinent service by including them as form content. This may be accomplished by using the multipart/form-data encoding type when the form is submitted.

Some servers may return user-supplied data as part of an error message. If the user-supplied data includes JavaScript, it will be executed in the context of the server. This may allow an attacker to perform cross-site scripting attacks and steal cookie-based authentication credentials.

The vulnerability affects browsers from multiple vendors and HTML-enabled email clients.

NOTE: An attacker may be able to circumvent browsers that prevent access to certain ports by adding 65536 to the number of the port that the attacker is sending data to.

Affected Products:

• Apple Safari 1.3.2
• Apple Safari 3.1.1
• Caldera OpenLinux Server 3.1.0
• Caldera OpenLinux Server 3.1.1
• Caldera OpenLinux Workstation 3.1.0
• Caldera OpenLinux Workstation 3.1.1
• Conectiva Linux 7.0.0
• Conectiva Linux 8.0.0
• Debian Linux 3.0.0
• MandrakeSoft Corporate Server 2.1.0
• MandrakeSoft Corporate Server 2.1.0 x86_64
• MandrakeSoft Corporate Server 3.0.0
• MandrakeSoft Corporate Server 3.0.0 x86_64
• MandrakeSoft Linux Mandrake 10.1.0
• MandrakeSoft Linux Mandrake 10.1.0 x86_64
• MandrakeSoft Linux Mandrake 10.2.0
• MandrakeSoft Linux Mandrake 10.2.0 x86_64
• MandrakeSoft Linux Mandrake 2006.0.0
• MandrakeSoft Linux Mandrake 2006.0.0 x86_64
• MandrakeSoft Multi Network Firewall 2.0.0
• Microsoft Internet Explorer 3.0 for Windows 3.1
• Microsoft Internet Explorer 3.0 for Windows 95
• Microsoft Internet Explorer 3.0 for Windows NT 3.51
• Microsoft Internet Explorer 3.0 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 for Windows 3.1
• Microsoft Internet Explorer 3.2 for Windows 95
• Microsoft Internet Explorer 3.2 for Windows NT 3.51
• Microsoft Internet Explorer 3.2 for Windows NT 4.0
• Microsoft Internet Explorer 4.0
• Microsoft Internet Explorer 4.0 for Windows 3.1
• Microsoft Internet Explorer 4.0 for Windows 95
• Microsoft Internet Explorer 4.0 for Windows NT 3.51
• Microsoft Internet Explorer 4.0 for Windows NT 4.0
• Microsoft Internet Explorer 4.0.1
• Microsoft Internet Explorer 4.0.1 SP2
• Microsoft Internet Explorer 4.0.1 for Windows 98
• Microsoft Internet Explorer 4.0.1 for Windows NT 4.0
• Microsoft Internet Explorer 4.1 for Windows 95
• Microsoft Internet Explorer 4.1 for Windows 98
• Microsoft Internet Explorer 4.1 for Windows NT 4.0
• 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 5.0.1
• 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 5.0.1 for Windows NT 4.0
• Microsoft Internet Explorer 5.5
• Microsoft Internet Explorer 5.5 SP1
• Microsoft Internet Explorer 5.5 SP2
• Microsoft Internet Explorer 6.0
• Microsoft Internet Explorer 6.0 SP1
• Microsoft Internet Explorer 6.0 SP2 - do not use
• Microsoft Internet Explorer 7.0
• Microsoft Internet Explorer 8 Beta 1
• Microsoft Outlook Express 4.27.3110
• Microsoft Outlook Express 4.72.2106
• Microsoft Outlook Express 4.72.3120
• Microsoft Outlook Express 4.72.3612
• Microsoft Outlook Express 5.5
• Microsoft Outlook Express for MacOS 4.5
• Microsoft Outlook Express for MacOS 5.0
• Microsoft Outlook Express for MacOS 5.0.1
• Microsoft Outlook Express for MacOS 5.0.2
• Microsoft Outlook Express for MacOS 5.0.3
• 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 ME
• Microsoft Windows NT 4.0
• Microsoft Windows Server 2003 Datacenter Edition
• Microsoft Windows Server 2003 Datacenter Edition Itanium
• Microsoft Windows Server 2003 Enterprise Edition
• Microsoft Windows Server 2003 Enterprise Edition Itanium
• Microsoft Windows Server 2003 Itanium SP2
• Microsoft Windows Server 2003 SP2
• Microsoft Windows Server 2003 Standard Edition
• Microsoft Windows Server 2003 Web Edition
• Microsoft Windows Server 2003 x64 SP2
• Microsoft Windows Server 2008 for 32-bit Systems
• Microsoft Windows Server 2008 for 32-bit Systems SP2
• Microsoft Windows Server 2008 for Itanium-based Systems
• Microsoft Windows Server 2008 for Itanium-based Systems SP2
• Microsoft Windows Server 2008 for x64-based Systems
• Microsoft Windows Server 2008 for x64-based Systems SP2
• Microsoft Windows Vista
• Microsoft Windows Vista Business
• Microsoft Windows Vista Enterprise
• Microsoft Windows Vista Home Basic
• Microsoft Windows Vista Home Premium
• Microsoft Windows Vista SP1
• Microsoft Windows Vista SP2
• Microsoft Windows Vista Ultimate
• Microsoft Windows Vista x64 Edition
• Microsoft Windows Vista x64 Edition SP1
• Microsoft Windows Vista x64 Edition SP2
• Microsoft Windows XP Embedded SP3
• Microsoft Windows XP Home
• Microsoft Windows XP Home SP3
• Microsoft Windows XP Media Center Edition SP3
• Microsoft Windows XP Professional
• Microsoft Windows XP Professional SP3
• Microsoft Windows XP Professional x64 Edition SP2
• Microsoft Windows XP Tablet PC Edition SP3
• Mozilla Firefox 3.0
• Mozilla Firefox 3.0 Beta 5
• Mozilla Firefox 3.0.1
• Mozilla Firefox 3.0.10
• Mozilla Firefox 3.0.11
• Mozilla Firefox 3.0.12
• Mozilla Firefox 3.0.13
• Mozilla Firefox 3.0.14
• Mozilla Firefox 3.0.15
• Mozilla Firefox 3.0.16
• Mozilla Firefox 3.0.2
• Mozilla Firefox 3.0.3
• Mozilla Firefox 3.0.4
• Mozilla Firefox 3.0.5
• Mozilla Firefox 3.0.6
• Mozilla Firefox 3.0.7
• Mozilla Firefox 3.0.7 Beta
• Mozilla Firefox 3.0.8
• Mozilla Firefox 3.0.9
• Mozilla Firefox 3.1 Beta 1
• Mozilla Firefox 3.1 Beta 2
• Mozilla Firefox 3.1 Beta 3
• Mozilla Firefox 3.5.0
• Mozilla Firefox 3.5.1
• Mozilla Firefox 3.5.2
• Mozilla Firefox 3.5.3
• Mozilla Firefox 3.5.4
• Mozilla Firefox 3.5.5
• Mozilla Firefox 3.5.6
• Netscape Communicator 4.0.0
• Netscape Communicator 4.06
• Netscape Communicator 4.07
• Netscape Communicator 4.08
• Netscape Communicator 4.4.0
• Netscape Communicator 4.5.0
• Netscape Communicator 4.5.0
• 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
• Netscape Communicator 6.1.0
• Netscape Netscape 6.0.0
• Netscape Netscape 6.0.0 1
• Opera Software Opera Web Browser 5.0.0 2 win32
• Opera Software Opera Web Browser 5.0.0 Linux
• Opera Software Opera Web Browser 5.1.0 0 win32
• Opera Software Opera Web Browser 5.1.0 1 win32
• Opera Software Opera Web Browser 5.12.0 win32
• Opera Software Opera Web Browser 9.27
• Opera Software Opera Web Browser 9.5
• RedHat Linux for iSeries 7.1.0
• RedHat Linux for pSeries 7.1.0
• SGI IRIX 6.5.11
• SGI IRIX 6.5.12
• SGI IRIX 6.5.13
• SGI IRIX 6.5.14
• SGI IRIX 6.5.15
• Sun Linux 5.0.6
• Trustix Secure Linux 1.1.0
• Trustix Secure Linux 1.2.0
• Trustix Secure Linux 1.5.0
• Ubuntu Ubuntu Linux 4.1.0 ia32
• Ubuntu Ubuntu Linux 4.1.0 ia64
• Ubuntu Ubuntu Linux 4.1.0 ppc
• Ubuntu Ubuntu Linux 5.0.0 4 amd64
• Ubuntu Ubuntu Linux 5.0.0 4 i386
• Ubuntu Ubuntu Linux 5.0.0 4 powerpc
• Ubuntu Ubuntu Linux 5.10.0 amd64
• Ubuntu Ubuntu Linux 5.10.0 i386
• Ubuntu Ubuntu Linux 5.10.0 powerpc
• University of Kansas Lynx 2.7.0
• University of Kansas Lynx 2.8.0
• University of Kansas Lynx 2.8.4
• University of Kansas Lynx 2.8.5

References:

• Andrew A: Firefox XPS IRC Attack
• Obscure <obscure@eyeonsecurity.net>: Extended HTML Form Attack
• Sandro Gauci: The Extended HTML Form attack revisited
• Sandro Gauci: [Full-disclosure] The Extended HTML Form attack revisited

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