CVE-2025-23200: Librenms/librenms Cross-Site Scripting Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-c66p-64fj-jmc2",
  "modified" : "2025-03-25T15:48:14Z",
  "published" : "2025-01-16T17:32:55Z",
  "aliases" : [ "CVE-2025-23200" ],
  "summary" : "LibreNMS Misc Section Stored Cross-site Scripting vulnerability",
  "details" : "# StoredXSS-LibreNMS-MiscSection\n\n\n**Description:**\n\n\nStored XSS on the parameter: `ajax_form.php` -> param: state\n\nRequest:\n```http\nPOST /ajax_form.php HTTP/1.1\nHost: <your_host>\nX-Requested-With: XMLHttpRequest\nX-CSRF-TOKEN: <your_XSRF_token>\nContent-Type: application/x-www-form-urlencoded; charset=UTF-8\nCookie: <your_cookie>\n\ntype=override-config&device_id=1&attrib=override_icmp_disable&state=\"><img%20src%20onerror=\"alert(1)\"> \n```\n\n\nof Librenms version 24.10.1 ([https://github.com/librenms/librenms](https://github.com/librenms/librenms)) allows remote attackers to inject malicious scripts. When a user views or interacts with the page displaying the data, the malicious script executes immediately, leading to potential unauthorized actions or data exposure.\n\n\nThe vulnerability in the line:\n```php\n$attrib_val = get_dev_attrib($device, $name);\n```\nwithin the `dynamic_override_config` function arises because the value of `$attrib_val is` retrieved from untrusted data without any sanitization or encoding (at [Line 778](https://github.com/librenms/librenms/blob/master/includes/html/functions.inc.php#L778)). \n\nWhen `dynamic_override_config` is called, the unescaped `$attrib_val` is injected directly into the HTML (at [misc.inc.php](https://github.com/librenms/librenms/blob/master/includes/html/pages/device/edit/misc.inc.php)).\n\n\n**Proof of Concept:**\n1. Add a new device through the LibreNMS interface.\n2. Edit the newly created device and select the Misc section.\n3. In any of the following fields: \"Override default ssh port\", \"Override default telnet port\", \"Override default http port\" or \"Unix agent port\", enter the payload: `\"><img src onerror=\"alert(document.cookie)\">`.\n4. Save the changes.\n5. Observe that when the page loads, the XSS payload executes, triggering a popup that displays the current cookies.\n\n\n\n![image](https://github.com/user-attachments/assets/097d17cb-7a6c-4924-add8-f867df643025)\n![image](https://github.com/user-attachments/assets/8213d55a-d87a-4a6e-94bf-092877398da5)\n\n\n**Impact:**\n\nExecution of Malicious Code",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "librenms/librenms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "23.9.0"
      }, {
        "fixed" : "24.11.0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "< 24.10.1"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/librenms/librenms/security/advisories/GHSA-c66p-64fj-jmc2"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-23200"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/librenms/librenms/pull/16722"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/librenms/librenms/commit/26258a2518dbfa55b213ec4b90ec16ed97efb597"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/librenms/librenms"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-01-16T17:32:55Z",
    "nvd_published_at" : "2025-01-16T23:15:08Z"
  }
}