Vulnerability Note VU#468843

Microsoft Internet Explorer 7 DisableCachingOfSSLPages may not prevent caching

Original Release date: 09 May 2008 | Last revised: 09 May 2008

Overview

Setting the Internet Explorer 7 option DisableCachingOfSSLPages may not prevent the caching of SSL-enabled web pages.

Description

Administrators and users can set the Internet Explorer DisableCachingOfSSLPages option to prevent sensitive or private data from being saved to disk. The registry key for this setting is:

    HKCU\Software\Microsoft\Windows\CurrentVersion\InternetSettings\DisableCachingOfSSLPages

After enabling this setting, Internet Explorer 7 may still cache SSL-enabled web pages to disk.

Impact

Private or sensitive data may be written to disk inadvertently.

Solution

We are currently unaware of a practical solution to this problem.

Secure deletion

Securely deleting or encrypting the Internet Explorer 7 browser cache (%userprofile%\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low) that contains the sensitive information will mitigate this vulnerability.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
Microsoft CorporationAffected06 Mar 200822 Apr 2008
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A

References

Credit

Thanks to Bill KNox from MITRE for reporting this vulnerability.

This document was written by Ryan Giobbi.

Other Information

  • CVE IDs: Unknown
  • Date Public: 09 May 2008
  • Date First Published: 09 May 2008
  • Date Last Updated: 09 May 2008
  • Severity Metric: 2.40
  • Document Revision: 18

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