MS02-023 does not patch actual issue, users are still vulnerable!

From: GreyMagic Software (security@GREYMAGIC.COM)
Date: 05/16/02

Date:         Thu, 16 May 2002 15:42:31 +0200
From: GreyMagic Software <security@GREYMAGIC.COM>


Microsoft released a cumulative patch yesterday, which, among other issues,
allegedly patches the dialogArguments vulnerability

In their bulletin Microsoft makes several severe errors:

1. "A cross-site scripting vulnerability in a Local HTML Resource..."

No, Microsoft, the problem is not plain cross site scripting, the problem is
that dialogArguments' security restrictions are bypassed and it is passed to
the dialog even though it shouldn't. Please re-read the advisories.

2. "A successful attack requires that a user first click on a hyperlink. There
is no way to automate an attack using this vulnerability."

This is simply wrong, the user doesn't have to click anything for this issue to
be exploited, it can run automatically.

3. Microsoft also claims that this issue only exists in IE6.

Microsoft obviously doesn't follow Bugtraq. This issue also exists in IE5 and
IE5.5, as we demonstrated in our GM#001-AX advisory.

In conclusion, Microsoft did not understand the problem. They only patched a
symptom of this vulnerability, not its root cause.

As a result of that incomplete "patch" IE5 and IE5.5 are still very much
vulnerable to this attack in other resources. For a demonstration see

        - GMS.

Relevant Pages

  • SecurityFocus Microsoft Newsletter #176
    ... MICROSOFT VULNERABILITY SUMMARY ... Microsoft Windows XP HCP URI Handler Arbitrary Command Execu... ... PHPNuke Category Parameter SQL Injection Vulnerability ... Microsoft Baseline Security Analyzer Vulnerability Identific... ...
  • SecurityFocus Microsoft Newsletter #83
    ... MICROSOFT VULNERABILITY SUMMARY ... Microsoft IIS CodeBrws.ASP Source Code Disclosure Vulnerability ... Microsoft Internet Explorer History List Script Injection ... Microsoft Windows 2000 Lanman Denial of Service Vulnerability ...
  • SecurityFocus Microsoft Newsletter #81
    ... MICROSOFT VULNERABILITY SUMMARY ... WWWIsis Remote Command Execution Vulnerability ... Windows NT 4.0 Print Spooler Security ...
  • SecurityFocus Microsoft Newsletter #185
    ... NEW MICROSOFT VULNERABILITIES - Audit Your Network Security ... SurgeLDAP User.CGI Directory Traversal Vulnerability ... Microsoft Windows H.323 Remote Buffer Overflow Vulnerability ... Microsoft Jet Database Engine Remote Code Execution Vulnerab... ...
  • SecurityFocus Microsoft Newsletter #336
    ... MICROSOFT VULNERABILITY SUMMARY ... Microsoft Windows Unspecified Remote Code Execution Vulnerability ... Microsoft Windows Explorer BMP Image Denial of Service Vulnerability ... An attacker could leverage this issue to have arbitrary code execute with kernel level privileges. ...