CVE-2021-4132: Remdex/livehelperchat Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-f7xw-46vh-5jw2
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CVSS 5.4
CWE-79
Published
Advisory Summary

CVE-2021-4132 is a MODERATE (CVSS 5.4) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Remdex/livehelperchat libraries in the Packagist ecosystem. The issue involves livehelperchat is vulnerable to cross-site scripting. Remediation is available by upgrading affected packages to version 3.91.

CVE-2021-4132 at a Glance

CVE Identifier CVE-2021-4132
GHSA Identifier GHSA-f7xw-46vh-5jw2
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Remdex/livehelperchat
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.4

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

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

How to Fix CVE-2021-4132

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

remdex/livehelperchat fixed: 3.91 
Upgrade remdex/livehelperchat to 3.91
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 remdex/livehelperchat

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-4132, inspect your project dependencies for Remdex/livehelperchat:

inspect dependencies for remdex/livehelperchat

Analyze the terminal output to locate any version of Remdex/livehelperchat in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.91), 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 Remdex/livehelperchat, 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

livehelperchat is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVE-2021-4132 Affected Remdex/livehelperchat Versions

1 component(s)
Fixed Versions:
3.91
Product / Package Ecosystem Affected Versions Fixed Version
remdex/livehelperchat
 Packagist
< 3.91
3.91

References

NVD — CVE-2021-4132 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-4132
Security Fix Commit FIX COMMIT
https://github.com/livehelperchat/livehelperchat/commit/55b1e3bf62c564db7c919f5293ec1e755c2958d6
Remdex/livehelperchat Source Repository REPOSITORY
https://github.com/livehelperchat/livehelperchat
huntr.dev/bounties/7eb80e7c-b... WEB
https://huntr.dev/bounties/7eb80e7c-bb7a-478d-9760-0ea2fa9dc0c2

Frequently Asked Questions

What is CVE-2021-4132?
CVE-2021-4132 is a security vulnerability in Remdex/livehelperchat involving livehelperchat is vulnerable to Cross-site Scripting under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Remdex/livehelperchat versions are affected?
Affected versions include releases prior to 3.91 across affected packages: remdex/livehelperchat.
What version fixes CVE-2021-4132?
Upgrading to 3.91 (or the latest patched release for your respective branch) resolves the vulnerability.
Is remdex/livehelperchat affected?
Yes, remdex/livehelperchat is affected in releases prior to 3.91. Upgrade your dependency to 3.91 or later.
What is the CVSS score of CVE-2021-4132?
CVE-2021-4132 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2021-4132?
CVE-2021-4132 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-2021-4132?
Run the dependency tree command: 'inspect dependencies for remdex/livehelperchat'. 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-f7xw-46vh-5jw2",
  "modified" : "2022-01-04T20:12:09Z",
  "published" : "2022-01-05T20:33:47Z",
  "aliases" : [ "CVE-2021-4132" ],
  "summary" : "livehelperchat is vulnerable to Cross-site Scripting",
  "details" : "livehelperchat is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "remdex/livehelperchat"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.91"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-4132"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/livehelperchat/livehelperchat/commit/55b1e3bf62c564db7c919f5293ec1e755c2958d6"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/livehelperchat/livehelperchat"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.dev/bounties/7eb80e7c-bb7a-478d-9760-0ea2fa9dc0c2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-01-04T20:12:09Z",
    "nvd_published_at" : "2021-12-17T13:15:00Z"
  }
}