cvelistv5 - cve-2024-51998

cve-2024-51998

Vulnerability from cvelistv5

Published

2024-11-07 23:34

Modified

2024-11-08 15:24

Severity ?

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

Summary

changedetection.io is a free open source web page change detection tool. The validation for the file URI scheme falls short, and results in an attacker being able to read any file on the system. This issue only affects instances with a webdriver enabled, and `ALLOW_FILE_URI` false or not defined. The check used for URL protocol, `is_safe_url`, allows `file:` as a URL scheme. It later checks if local files are permitted, but one of the preconditions for the check is that the URL starts with `file://`. The issue comes with the fact that the file URI scheme is not required to have double slashes. This issue has been addressed in version 0.47.06 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

References

▼	URL	Tags
	security-advisories@github.com	https://github.com/dgtlmoon/changedetection.io/blob/e0abf0b50507a8a3d0c1d8522ab23519b3e4cdf4/changedetectionio/model/Watch.py#L11-L13
	security-advisories@github.com	https://github.com/dgtlmoon/changedetection.io/commit/49bc982c697169c98b79698889fb9d26f6b3317f
	security-advisories@github.com	https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-6jrf-rcjf-245r

Impacted products

Vendor

Product

Version

▼

dgtlmoon

changedetection.io

Version: < 0.47.06

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:dgtlmoon:changedetection.io:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "changedetection.io",
            "vendor": "dgtlmoon",
            "versions": [
              {
                "lessThan": "0.47.06",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-51998",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-08T15:23:17.548868Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-08T15:24:19.464Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "changedetection.io",
          "vendor": "dgtlmoon",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.47.06"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "changedetection.io is a free open source web page change detection tool. The validation for the file URI scheme falls short, and results in an attacker being able to read any file on the system. This issue only affects instances with a webdriver enabled, and `ALLOW_FILE_URI` false or not defined. The check used for URL protocol, `is_safe_url`, allows `file:` as a URL scheme. It later checks if local files are permitted, but one of the preconditions for the check is that the URL starts with `file://`. The issue comes with the fact that the file URI scheme is not required to have double slashes. This issue has been addressed in version 0.47.06 and all users are advised to upgrade. There are no known workarounds for this vulnerability."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-11-07T23:34:07.183Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-6jrf-rcjf-245r",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-6jrf-rcjf-245r"
        },
        {
          "name": "https://github.com/dgtlmoon/changedetection.io/commit/49bc982c697169c98b79698889fb9d26f6b3317f",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/dgtlmoon/changedetection.io/commit/49bc982c697169c98b79698889fb9d26f6b3317f"
        },
        {
          "name": "https://github.com/dgtlmoon/changedetection.io/blob/e0abf0b50507a8a3d0c1d8522ab23519b3e4cdf4/changedetectionio/model/Watch.py#L11-L13",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/dgtlmoon/changedetection.io/blob/e0abf0b50507a8a3d0c1d8522ab23519b3e4cdf4/changedetectionio/model/Watch.py#L11-L13"
        }
      ],
      "source": {
        "advisory": "GHSA-6jrf-rcjf-245r",
        "discovery": "UNKNOWN"
      },
      "title": "Path traversal using file URI scheme without supplying hostname in changedetection.io"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-51998",
    "datePublished": "2024-11-07T23:34:07.183Z",
    "dateReserved": "2024-11-04T17:46:16.777Z",
    "dateUpdated": "2024-11-08T15:24:19.464Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-51998\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2024-11-08T00:15:15.490\",\"lastModified\":\"2024-11-08T19:01:03.880\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"changedetection.io is a free open source web page change detection tool. The validation for the file URI scheme falls short, and results in an attacker being able to read any file on the system. This issue only affects instances with a webdriver enabled, and `ALLOW_FILE_URI` false or not defined. The check used for URL protocol, `is_safe_url`, allows `file:` as a URL scheme. It later checks if local files are permitted, but one of the preconditions for the check is that the URL starts with `file://`. The issue comes with the fact that the file URI scheme is not required to have double slashes. This issue has been addressed in version 0.47.06 and all users are advised to upgrade. There are no known workarounds for this vulnerability.\"},{\"lang\":\"es\",\"value\":\"changedetection.io es una herramienta de detecci\u00f3n de cambios de p\u00e1ginas web de c\u00f3digo abierto y gratuita. La validaci\u00f3n del esquema de URI de archivo no es la adecuada y hace que un atacante pueda leer cualquier archivo del sistema. Este problema solo afecta a las instancias con un controlador web habilitado y con `ALLOW_FILE_URI` falso o no definido. La comprobaci\u00f3n utilizada para el protocolo URL, `is_safe_url`, permite `file:` como esquema de URL. M\u00e1s adelante, comprueba si se permiten archivos locales, pero una de las condiciones previas para la comprobaci\u00f3n es que la URL comience con `file://`. El problema surge del hecho de que no se requiere que el esquema de URI de archivo tenga barras dobles. Este problema se ha solucionado en la versi\u00f3n 0.47.06 y se recomienda a todos los usuarios que actualicen. No existen workarounds para esta vulnerabilidad.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N\",\"baseScore\":8.6,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":4.0}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-22\"}]}],\"references\":[{\"url\":\"https://github.com/dgtlmoon/changedetection.io/blob/e0abf0b50507a8a3d0c1d8522ab23519b3e4cdf4/changedetectionio/model/Watch.py#L11-L13\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/dgtlmoon/changedetection.io/commit/49bc982c697169c98b79698889fb9d26f6b3317f\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-6jrf-rcjf-245r\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}

ghsa-6jrf-rcjf-245r

Vulnerability from github

Published

2024-11-07 22:00

Modified

2024-11-08 13:55

Severity ?

8.6 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
7.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N

Summary

changedetection.io path traversal using file URI scheme without supplying hostname

Details

Summary

The validation for the file URI scheme falls short, and results in an attacker being able to read any file on the system. This issue only affects instances with a webdriver enabled, and ALLOW_FILE_URI false or not defined.

Details

The check used for URL protocol, is_safe_url, allows file: as a URL scheme:

https://github.com/dgtlmoon/changedetection.io/blob/e0abf0b50507a8a3d0c1d8522ab23519b3e4cdf4/changedetectionio/model/Watch.py#L11-L13

It later checks if local files are permitted, but one of the preconditions for the check is that the URL starts with file://. The issue comes with the fact that the file URI scheme is not required to have double slashes.

A valid file URI must therefore begin with either file:/path (no hostname), file:///path (empty hostname), or file://hostname/path. — Wikipedia

https://github.com/dgtlmoon/changedetection.io/blob/e0abf0b50507a8a3d0c1d8522ab23519b3e4cdf4/changedetectionio/processors/init.py#L37-L41

PoC

Open up a changedetection.io instance with a webdriver configured
Create a new watch: file:/etc/passwd or a similar path for your operating system. Enable webdriver mode
Wait for it to be checked
Open preview
Notice contents of the file

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.47.5"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "changedetection.io"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.47.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-51998"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-11-07T22:00:58Z",
    "nvd_published_at": "2024-11-08T00:15:15Z",
    "severity": "HIGH"
  },
  "details": "### Summary\n\nThe validation for the file URI scheme falls short, and results in an attacker being able to read any file on the system. This issue only affects instances with a webdriver enabled, and `ALLOW_FILE_URI` false or not defined.\n\n### Details\n\nThe check used for URL protocol, `is_safe_url`, allows `file:` as a URL scheme:\n\nhttps://github.com/dgtlmoon/changedetection.io/blob/e0abf0b50507a8a3d0c1d8522ab23519b3e4cdf4/changedetectionio/model/Watch.py#L11-L13\n\nIt later checks if local files are permitted, but one of the preconditions for the check is that the URL starts with `file://`. The issue comes with the fact that the file URI scheme is not required to have double slashes.\n\n\u003e A valid file URI must therefore begin with either `file:/path` (no hostname), `file:///path` (empty hostname), or `file://hostname/path`.\n\u003e \u2014 [Wikipedia](https://en.wikipedia.org/wiki/File_URI_scheme#Number_of_slash_characters)\n\nhttps://github.com/dgtlmoon/changedetection.io/blob/e0abf0b50507a8a3d0c1d8522ab23519b3e4cdf4/changedetectionio/processors/__init__.py#L37-L41\n\n### PoC\n\n1. Open up a changedetection.io instance with a webdriver configured\n2. Create a new watch: `file:/etc/passwd` or a similar path for your operating system. Enable webdriver mode\n3. Wait for it to be checked\n4. Open preview\n5. Notice contents of the file\n",
  "id": "GHSA-6jrf-rcjf-245r",
  "modified": "2024-11-08T13:55:31Z",
  "published": "2024-11-07T22:00:58Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-6jrf-rcjf-245r"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-51998"
    },
    {
      "type": "WEB",
      "url": "https://github.com/dgtlmoon/changedetection.io/commit/49bc982c697169c98b79698889fb9d26f6b3317f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/dgtlmoon/changedetection.io"
    },
    {
      "type": "WEB",
      "url": "https://github.com/dgtlmoon/changedetection.io/blob/e0abf0b50507a8a3d0c1d8522ab23519b3e4cdf4/changedetectionio/model/Watch.py#L11-L13"
    },
    {
      "type": "WEB",
      "url": "https://github.com/dgtlmoon/changedetection.io/blob/e0abf0b50507a8a3d0c1d8522ab23519b3e4cdf4/changedetectionio/processors/__init__.py#L37-L41"
    },
    {
      "type": "WEB",
      "url": "https://github.com/dgtlmoon/changedetection.io/releases/tag/0.47.06"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "changedetection.io path traversal using file URI scheme without supplying hostname"
}

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.

Action not permitted

cve-2024-51998

Vulnerability from cvelistv5

ghsa-6jrf-rcjf-245r

Vulnerability from github

Summary

Details

PoC

Tags

Sightings

Nomenclature