github - ghsa-cvf9-g74c-vv79

GHSA-CVF9-G74C-VV79

Vulnerability from github – Published: 2022-12-07 18:30 – Updated: 2022-12-12 15:30

Details

On Windows, restricted files can be accessed via os.DirFS and http.Dir. The os.DirFS function and http.Dir type provide access to a tree of files rooted at a given directory. These functions permit access to Windows device files under that root. For example, os.DirFS("C:/tmp").Open("COM1") opens the COM1 device. Both os.DirFS and http.Dir only provide read-only filesystem access. In addition, on Windows, an os.DirFS for the directory (the root of the current drive) can permit a maliciously crafted path to escape from the drive and access any path on the system. With fix applied, the behavior of os.DirFS("") has changed. Previously, an empty root was treated equivalently to "/", so os.DirFS("").Open("tmp") would open the path "/tmp". This now returns an error.

Severity ?

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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{
  "affected": [],
  "aliases": [
    "CVE-2022-41720"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-12-07T17:15:00Z",
    "severity": "HIGH"
  },
  "details": "On Windows, restricted files can be accessed via os.DirFS and http.Dir. The os.DirFS function and http.Dir type provide access to a tree of files rooted at a given directory. These functions permit access to Windows device files under that root. For example, os.DirFS(\"C:/tmp\").Open(\"COM1\") opens the COM1 device. Both os.DirFS and http.Dir only provide read-only filesystem access. In addition, on Windows, an os.DirFS for the directory (the root of the current drive) can permit a maliciously crafted path to escape from the drive and access any path on the system. With fix applied, the behavior of os.DirFS(\"\") has changed. Previously, an empty root was treated equivalently to \"/\", so os.DirFS(\"\").Open(\"tmp\") would open the path \"/tmp\". This now returns an error.",
  "id": "GHSA-cvf9-g74c-vv79",
  "modified": "2022-12-12T15:30:32Z",
  "published": "2022-12-07T18:30:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-41720"
    },
    {
      "type": "WEB",
      "url": "https://go.dev/cl/455716"
    },
    {
      "type": "WEB",
      "url": "https://go.dev/issue/56694"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/golang-announce/c/L_3rmdT0BMU/m/yZDrXjIiBQAJ"
    },
    {
      "type": "WEB",
      "url": "https://pkg.go.dev/vuln/GO-2022-1143"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-41720 (GCVE-0-2022-41720)

Vulnerability from cvelistv5 – Published: 2022-12-07 16:11 – Updated: 2025-04-23 15:43

Summary

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CWE

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

Assigner

References

URL

Tags

	https://go.dev/issue/56694
	https://go.dev/cl/455716
	https://groups.google.com/g/golang-announce/c/L_3…
	https://pkg.go.dev/vuln/GO-2022-1143

Impacted products

Vendor

Product

Version

Go standard library

Affected: 0 , < 1.18.9 (semver)
Affected: 1.19.0-0 , < 1.19.4 (semver)

Go standard library

net/http

Affected: 0 , < 1.18.9 (semver)
Affected: 1.19.0-0 , < 1.19.4 (semver)

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-CVF9-G74C-VV79

CVE-2022-41720 (GCVE-0-2022-41720)

Tags

Sightings

Nomenclature