CWEweakness
CWE-52 Path Equivalence: '/multiple/trailing/slash//'
- Abstraction
- Variant
- Structure
- Simple
- Status
- Incomplete
- Languages
- Not Language-Specific
- CWE version
- 5.0
Description
The product accepts path input in the form of multiple trailing slash ('/multiple/trailing/slash//') without appropriate validation, which can lead to ambiguous path resolution and allow an attacker to traverse the file system to unintended locations or access arbitrary files.
Common consequences
• Confidentiality, Integrity: Read Files or Directories, Modify Files or Directories
Potential mitigations
• [Implementation] Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.
Observed examples
• CVE-2002-1078: Directory listings in web server using multiple trailing slash
Related
Observed example · CVE (1)
- CVE-2002-1078 Abyss Web Server 1.0.3 allows remote attackers to list directory contents via an HTTP GET request that ends in a large number of / (slash)… vulnerability
Can precede · CWE (1)
- CWE-289 Authentication Bypass by Alternate Name weakness