CVE-2024-49758: Librenms/librenms Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-c86q-rj37-8f85
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CVSS 6.8
CWE-79
Published
Advisory Summary

CVE-2024-49758 is a MODERATE (CVSS 6.8) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Librenms/librenms libraries in the Packagist ecosystem. The issue involves librenms has a stored xss in exampleplugin with device's notes. Remediation is available by upgrading affected packages to version 24.10.0.

CVE-2024-49758 at a Glance

CVE Identifier CVE-2024-49758
GHSA Identifier GHSA-c86q-rj37-8f85
Severity MODERATE
CVSS v3.1 Base Score 6.8
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Librenms/librenms
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2024-49758

To remediate this vulnerability, upgrade all affected Librenms/librenms dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

librenms/librenms fixed: 24.10.0 
Upgrade librenms/librenms to 24.10.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for librenms/librenms

How to Check if You Are Affected

To determine whether your application is affected by CVE-2024-49758, inspect your project dependencies for Librenms/librenms:

inspect dependencies for librenms/librenms

Analyze the terminal output to locate any version of Librenms/librenms in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 24.10.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Librenms/librenms, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Summary The application fail to sanitising inputs properly and rendering the code from user input to browser which allow an attacker to execute malicious javascript code. ### Details User with Admin role can add Notes to a device, the application did not properly sanitize the user input, when the ExamplePlugin enable, if java script code is inside the device's Notes, its will be trigger. ### PoC 1. As an admin user, enable the ExamplePlugin. ![image](https://github.com/user-attachments/assets/409f3a0c-7fac-46e3-8140-84749a120dd9) 2. Add the payload `<img src="x" onerror="alert(document.cookie)">` into the device Notes ![image](https://github.com/user-attachments/assets/c2a57dbd-ea07-4166-8b29-61be6ad6c2b6) 3. Once visit the Overview of the Device, a pop-up will show up. ![image](https://github.com/user-attachments/assets/3c9b87c3-d010-49e7-bd13-4a715db4e0c3) ### Impact It could allow authenticated users to execute arbitrary JavaScript code in the context of other users' sessions. Impacted users could have their accounts compromised, enabling the attacker to perform unauthorized actions on their behalf.

CVE-2024-49758 Affected Librenms/librenms Versions

1 component(s)
Fixed Versions:
24.10.0
Product / Package Ecosystem Affected Versions Fixed Version
librenms/librenms
 Packagist
< 24.10.0
24.10.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/librenms/librenms/security/advisories/GHSA-c86q-rj37-8f85
NVD — CVE-2024-49758 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-49758
Security Fix Commit FIX COMMIT
https://github.com/librenms/librenms/commit/24b142d753898e273ec20b542a27dd6eb530c7d8
Librenms/librenms Source Repository REPOSITORY
https://github.com/librenms/librenms

Frequently Asked Questions

What is CVE-2024-49758?
CVE-2024-49758 is a security vulnerability in Librenms/librenms involving LibreNMS has a stored XSS in ExamplePlugin with Device's Notes under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Librenms/librenms versions are affected?
Affected versions include releases prior to 24.10.0 across affected packages: librenms/librenms.
What version fixes CVE-2024-49758?
Upgrading to 24.10.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is librenms/librenms affected?
Yes, librenms/librenms is affected in releases prior to 24.10.0. Upgrade your dependency to 24.10.0 or later.
What is the CVSS score of CVE-2024-49758?
CVE-2024-49758 has a CVSS v3.1 base score of 6.8 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2024-49758?
CVE-2024-49758 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Packagist dependencies for CVE-2024-49758?
Run the dependency tree command: 'inspect dependencies for librenms/librenms'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-c86q-rj37-8f85",
  "modified" : "2024-11-15T20:49:46Z",
  "published" : "2024-11-15T15:17:33Z",
  "aliases" : [ "CVE-2024-49758" ],
  "summary" : "LibreNMS has a stored XSS in ExamplePlugin with Device's Notes",
  "details" : "### Summary\n\nThe application fail to sanitising inputs properly and rendering the code from user input to browser which allow an attacker to execute malicious javascript code.\n\n### Details\n\nUser with Admin role can add Notes to a device, the application did not properly sanitize the user input, when the ExamplePlugin enable, if java script code is inside the device's Notes, its will be trigger.\n\n### PoC\n\n1. As an admin user, enable the ExamplePlugin.\n\n![image](https://github.com/user-attachments/assets/409f3a0c-7fac-46e3-8140-84749a120dd9)\n\n2. Add the payload `<img src=\"x\" onerror=\"alert(document.cookie)\">` into the device Notes\n\n![image](https://github.com/user-attachments/assets/c2a57dbd-ea07-4166-8b29-61be6ad6c2b6)\n\n3. Once visit the Overview of the Device, a pop-up will show up.\n\n![image](https://github.com/user-attachments/assets/3c9b87c3-d010-49e7-bd13-4a715db4e0c3)\n\n### Impact\n\nIt could allow authenticated users to execute arbitrary JavaScript code in the context of other users' sessions.\nImpacted users could have their accounts compromised, enabling the attacker to perform unauthorized actions on their behalf.\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "librenms/librenms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "24.10.0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 24.9.0"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/librenms/librenms/security/advisories/GHSA-c86q-rj37-8f85"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-49758"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/librenms/librenms/commit/24b142d753898e273ec20b542a27dd6eb530c7d8"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/librenms/librenms"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-11-15T15:17:33Z",
    "nvd_published_at" : "2024-11-15T16:15:34Z"
  }
}