id: GO-2022-0533
modules:
    - module: std
      versions:
        - fixed: 1.17.11
        - introduced: 1.18.0-0
        - fixed: 1.18.3
      vulnerable_at: 1.18.2
      packages:
        - package: path/filepath
          goos:
            - windows
          symbols:
            - Clean
summary: Path traversal via Clean on Windows in path/filepath
description: |-
    On Windows, the filepath.Clean function can convert certain invalid paths to
    valid, absolute paths, potentially allowing a directory traversal attack.

    For example, Clean(".\c:") returns "c:".
published: 2022-07-28T17:25:07Z
credits:
    - Unrud
references:
    - fix: https://go.dev/cl/401595
    - fix: https://go.googlesource.com/go/+/9cd1818a7d019c02fa4898b3e45a323e35033290
    - report: https://go.dev/issue/52476
    - web: https://groups.google.com/g/golang-announce/c/TzIC9-t8Ytg/m/IWz5T6x7AAAJ
cve_metadata:
    id: CVE-2022-29804
    cwe: 'CWE-22: Improper Limitation of a Pathname to a Restricted Directory (''Path Traversal'')'
    description: |-
        Incorrect conversion of certain invalid paths to valid, absolute paths in Clean
        in path/filepath before Go 1.17.11 and Go 1.18.3 on Windows allows potential
        directory traversal attack.
review_status: REVIEWED