Path Traversal: '../filedir'

The software uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize "../" sequences that can resolve to a location that is outside of that directory.


Description

This allows attackers to traverse the file system to access files or directories that are outside of the restricted directory.

The "../" manipulation is the canonical manipulation for operating systems that use "/" as directory separators, such as UNIX- and Linux-based systems. In some cases, it is useful for bypassing protection schemes in environments for which "/" is supported but not the primary separator, such as Windows, which uses "\" but can also accept "/".

See Also

SFP Secondary Cluster: Path Traversal

This category identifies Software Fault Patterns (SFPs) within the Path Traversal cluster (SFP16).

Comprehensive CWE Dictionary

This view (slice) covers all the elements in CWE.

Weaknesses Introduced During Implementation

This view (slice) lists weaknesses that can be introduced during implementation.

Weaknesses Introduced During Design

This view (slice) lists weaknesses that can be introduced during design.


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