Description

A software system that accepts path input in the form of trailing dot (‘filedir.’) without appropriate validation can lead to ambiguous path resolution and allow an attacker to traverse the file system to unintended locations or access arbitrary files.

Modes of Introduction:

– Implementation

Related Weaknesses

CWE-41
CWE-162

Consequences

Access Control: Bypass Protection Mechanism

Potential Mitigations

CVE References

• CVE-2000-1114
  • Source code disclosure using trailing dot

• CVE-2002-1986
  • Source code disclosure using trailing dot

• CVE-2004-2213
  • Source code disclosure using trailing dot

• CVE-2005-3293
  • Source code disclosure using trailing dot

• CVE-2004-0061
  • Bypass directory access restrictions using trailing dot in URL

• CVE-2000-1133
  • Bypass directory access restrictions using trailing dot in URL

• CVE-2001-1386
  • Bypass check for “.lnk” extension using “.lnk.”