github - ghsa-cvf9-g74c-vv79

ghsa-cvf9-g74c-vv79

Vulnerability from github

Published

2022-12-07 18:30

Modified

2022-12-12 15:30

Severity ?

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

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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

Vulnerability from cvelistv5

Published

2022-12-07 16:11

Modified

2024-08-03 12:49

Severity ?

Summary

Restricted file access on Windows in os and net/http

References

▼	URL	Tags
	https://go.dev/issue/56694
	https://go.dev/cl/455716
	https://groups.google.com/g/golang-announce/c/L_3rmdT0BMU/m/yZDrXjIiBQAJ
	https://pkg.go.dev/vuln/GO-2022-1143

Impacted products

▼	Vendor	Product
	Go standard library	os
	Go standard library	net/http

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T12:49:43.510Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://go.dev/issue/56694"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://go.dev/cl/455716"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://groups.google.com/g/golang-announce/c/L_3rmdT0BMU/m/yZDrXjIiBQAJ"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://pkg.go.dev/vuln/GO-2022-1143"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "os",
          "platforms": [
            "windows"
          ],
          "product": "os",
          "programRoutines": [
            {
              "name": "dirFS.Open"
            },
            {
              "name": "dirFS.Stat"
            },
            {
              "name": "DirFS"
            }
          ],
          "vendor": "Go standard library",
          "versions": [
            {
              "lessThan": "1.18.9",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.19.4",
              "status": "affected",
              "version": "1.19.0-0",
              "versionType": "semver"
            }
          ]
        },
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "net/http",
          "platforms": [
            "windows"
          ],
          "product": "net/http",
          "programRoutines": [
            {
              "name": "Dir.Open"
            },
            {
              "name": "ServeFile"
            },
            {
              "name": "fileHandler.ServeHTTP"
            },
            {
              "name": "fileTransport.RoundTrip"
            }
          ],
          "vendor": "Go standard library",
          "versions": [
            {
              "lessThan": "1.18.9",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.19.4",
              "status": "affected",
              "version": "1.19.0-0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE 22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-06-12T19:05:39.487Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
        {
          "url": "https://go.dev/issue/56694"
        },
        {
          "url": "https://go.dev/cl/455716"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/L_3rmdT0BMU/m/yZDrXjIiBQAJ"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2022-1143"
        }
      ],
      "title": "Restricted file access on Windows in os and net/http"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2022-41720",
    "datePublished": "2022-12-07T16:11:18.867Z",
    "dateReserved": "2022-09-28T17:00:06.609Z",
    "dateUpdated": "2024-08-03T12:49:43.510Z",
    "requesterUserId": "7d08541a-cd0a-42e2-8f81-76e6ceb65fc3",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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