Path Equivalence: Windows 8.3 Filename

Opis

The product contains a protection mechanism that restricts access to a long filename on a Windows operating system, but it does not properly restrict access to the equivalent short "8.3" filename.

Skutki

• Confidentiality, Integrity

  Read Files or Directories; Modify Files or Directories

Zapobieganie

• System Configuration

  Disable Windows from supporting 8.3 filenames by editing the Windows registry. Preventing 8.3 filenames will not remove previously generated 8.3 filenames.

Przykłady podatności

• CVE-1999-0012 Multiple web servers allow restriction bypass using 8.3 names instead of long names
• CVE-2001-0795 Source code disclosure using 8.3 file name.
• CVE-2005-0471 Multi-Factor Vulnerability. Product generates temporary filenames using long filenames, which become predictable in 8.3 format.

Słabość nadrzędna

• CWE-41 Improper Resolution of Path Equivalence

Kiedy powstaje

• Implementation

Dotyczy

Not Language-Specific, Windows, Not Technology-Specific

Uwagi

Probably under-studied.

Źródła

1. Writing Secure Code — Michael Howard, David LeBlanc, Microsoft Press, 2002
2. The Art of Software Security Assessment — Mark Dowd, John McDonald, Justin Schuh, Chapter 11, "DOS 8.3 Filenames", Page 673, Addison Wesley, 2006