id: GO-2023-2186
modules:
    - module: std
      versions:
        - fixed: 1.20.11
        - introduced: 1.21.0-0
        - fixed: 1.21.4
      vulnerable_at: 1.21.3
      packages:
        - package: path/filepath
          symbols:
            - IsLocal
summary: Incorrect detection of reserved device names on Windows in path/filepath
description: |-
    On Windows, The IsLocal function does not correctly detect reserved device names
    in some cases.

    Reserved names followed by spaces, such as "COM1 ", and reserved names "COM" and
    "LPT" followed by superscript 1, 2, or 3, are incorrectly reported as local.

    With fix, IsLocal now correctly reports these names as non-local.
references:
    - report: https://go.dev/issue/63713
    - fix: https://go.dev/cl/540277
    - web: https://groups.google.com/g/golang-announce/c/4tU8LZfBFkY
cve_metadata:
    id: CVE-2023-45284
    cwe: 'CWE-41: Improper Resolution of Path Equivalence'
review_status: REVIEWED