Published:2010/12/15  Last Updated:2010/12/16

JVN#30273074
Internet Explorer vulnerable to cross-site scripting

Overview

Microsoft Internet Explorer contains a vulnerability in handling specific character encoding which may result in a cross-site scripting attack.

Products Affected

  • Internet Explorer 6 for Windows XP SP3
  • Internet Explorer 6 for Windows XP x64 Edition SP2
  • Internet Explorer 7 for Windows XP SP3
  • Internet Explorer 7 for Windows XP x64 Edition SP2
  • Internet Explorer 7 for Windows Vista SP1 and SP2
  • Internet Explorer 7 forWindows Vista x64 Edition SP1 and Windows Vista x64 Edition SP2
  • Internet Explorer 8 for Windows XP SP3
  • Internet Explorer 8 for Windows XP x64 Edition SP2
  • Internet Explorer 8 for Windows Vista SP1 and SP2
  • Internet Explorer 8 for Windows Vista x64 Edition SP1 and Windows Vista x64 Edition SP2
  • Internet Explorer 8 for Windows 7 and Windows 7 x64

For more information, refer to the information provided by Microsoft.

Description

Microsoft Internet Explorer contains a vulnerability in handling specific UTF-7 encoded characters, which may result in cross-site scripting.

Impact

An arbitrary script may be executed.

Solution

Update the Software
Apply the latest update according to the information provided by Microsoft.

Vendor Status

Vendor Status Last Update Vendor Notes
FUJITSU LIMITED notvulnerable 2010/12/15
NEC Corporation notvulnerable 2010/12/16
Vendor Link
Microsoft Co.,Ltd. Cumulative Security Update for Internet Explorer (2416400)
Apache HTTP Server Project Environment Variables in Apache -- 'suppress-error-charset'

References

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on

Measures Conditions Severity
Access Required can be attacked over the Internet using packets
  • High
Authentication anonymous or no authentication (IP addresses do not count)
  • High
User Interaction Required the user must be convinced to take a standard action that does not feel harmful to most users, such as click on a link or view a file
  • Mid
Exploit Complexity the user must be convinced to take a difficult or suspicious action. If the honest user must have elevated privileges, they are likely to be more suspiciouse
  • High

Description of each analysis measures

Credit

Takeshi Terada and Yutaka Kokubu from Mitsui Bussan Secure Directions, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE CVE-2010-3342
JVN iPedia JVNDB-2010-000063

Update History

2010/12/16
NEC Corporation update status