CVE-2022-41722

Description

A path traversal vulnerability exists in filepath.Clean on Windows. On Windows, the filepath.Clean function could transform an invalid path such as "a/../c:/b" into the valid path "c:\b". This transformation of a relative (if invalid) path into an absolute path could enable a directory traversal attack. After fix, the filepath.Clean function transforms this path into the relative (but still invalid) path ".\c:\b".

CVSS Metrics

• v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Trends

Current EPSS score: 0.33%• Percentile: 56%

Techniques & Countermeasures

• CWE-22•Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

  The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Affected Systems

• go standard library•path/filepath

  < 1.19.6 | ≥ 1.20.0-0, < 1.20.1

• golang•go

  < 1.19.6 | 1.20.0

• Go•stdlib

  ≥ 1.20.0-0, < 1.20.1

References (4)

• https://go.dev/issue/57274
• https://go.dev/cl/468123
• https://groups.google.com/g/golang-announce/c/V0aBFqaFs_E
• https://pkg.go.dev/vuln/GO-2023-1568