CVE-2023-4347: Librenms/librenms Cross-Site Scripting Vulnerability

HIGH
Advisory Identifier: GHSA-m6pf-cm3f-7876
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CVSS 7.6
CWE-79
Published
Advisory Summary

CVE-2023-4347 is a HIGH (CVSS 7.6) 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 cross-site scripting vulnerability. Remediation is available by upgrading affected packages to version 23.8.0.

CVE-2023-4347 at a Glance

CVE Identifier CVE-2023-4347
GHSA Identifier GHSA-m6pf-cm3f-7876
Severity HIGH
CVSS v3.1 Base Score 7.6
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: 7.6

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity High (I:H)
Availability Low (A:L)

How to Fix CVE-2023-4347

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: 23.8.0 
Upgrade librenms/librenms to 23.8.0
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-2023-4347, 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 23.8.0), 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

Cross-site Scripting (XSS) - Reflected in GitHub repository librenms/librenms 23.7.0 and prior. A patch is available at commit 91c57a1ee54631e071b6b0c952d99c8ee892e824 and anticiapted to be part of version 23.8.0.

CVE-2023-4347 Affected Librenms/librenms Versions

1 component(s)
Fixed Versions:
23.8.0
Product / Package Ecosystem Affected Versions Fixed Version
librenms/librenms
 Packagist
< 23.8.0
23.8.0

References

NVD — CVE-2023-4347 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-4347
Security Fix Commit FIX COMMIT
https://github.com/librenms/librenms/commit/91c57a1ee54631e071b6b0c952d99c8ee892e824
Librenms/librenms Source Repository REPOSITORY
https://github.com/librenms/librenms
huntr.dev/bounties/1f78c6e1-2... WEB
https://huntr.dev/bounties/1f78c6e1-2923-46c5-9376-4cc5a8f1152f

Frequently Asked Questions

What is CVE-2023-4347?
CVE-2023-4347 is a security vulnerability in Librenms/librenms involving LibreNMS Cross-site Scripting vulnerability 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 23.8.0 across affected packages: librenms/librenms.
What version fixes CVE-2023-4347?
Upgrading to 23.8.0 (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 23.8.0. Upgrade your dependency to 23.8.0 or later.
What is the CVSS score of CVE-2023-4347?
CVE-2023-4347 has a CVSS v3.1 base score of 7.6 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L.
What CWE is associated with CVE-2023-4347?
CVE-2023-4347 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-2023-4347?
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-m6pf-cm3f-7876",
  "modified" : "2023-08-15T20:03:24Z",
  "published" : "2023-08-15T03:31:32Z",
  "aliases" : [ "CVE-2023-4347" ],
  "summary" : "LibreNMS Cross-site Scripting vulnerability",
  "details" : "Cross-site Scripting (XSS) - Reflected in GitHub repository librenms/librenms 23.7.0 and prior. A patch is available at commit 91c57a1ee54631e071b6b0c952d99c8ee892e824 and anticiapted to be part of version 23.8.0.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "librenms/librenms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "23.8.0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 23.7.0"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-4347"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/librenms/librenms/commit/91c57a1ee54631e071b6b0c952d99c8ee892e824"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/librenms/librenms"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.dev/bounties/1f78c6e1-2923-46c5-9376-4cc5a8f1152f"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-08-15T20:03:24Z",
    "nvd_published_at" : "2023-08-15T02:15:48Z"
  }
}