CVE-2022-32190

Description

JoinPath and URL.JoinPath do not remove ../ path elements appended to a relative path. For example, JoinPath("https://go.dev", "../go") returns the URL "https://go.dev/../go", despite the JoinPath documentation stating that ../ path elements are removed from the result.

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: 0.08%• Percentile: 25%

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•net/url

  ≥ 1.19.0-0, < 1.19.1

• golang•go

  1.19.0 | 1.19.0:beta1 | 1.19.0:rc1 | 1.19.0:rc2

• Go•stdlib

  ≥ 1.19.0-0, < 1.19.1

References (4)

• https://groups.google.com/g/golang-announce/c/x49AQzIVX-s
• https://go.dev/issue/54385
• https://go.dev/cl/423514
• https://pkg.go.dev/vuln/GO-2022-0988