CVE-2021-32853: Erxes Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-g9ph-r9hc-34r8
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CVSS 6.1
CWE-79
Published
Advisory Summary

CVE-2021-32853 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Erxes libraries in the npm ecosystem. The issue involves erxes vulnerable to cross-site scripting. Remediation is available in the latest vendor maintenance releases.

CVE-2021-32853 at a Glance

CVE Identifier CVE-2021-32853
GHSA Identifier GHSA-g9ph-r9hc-34r8
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Erxes
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 6.1

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
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-2021-32853

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

erxes fixed: Latest secure release 
npm install erxes@Latest secure release
Verify Direct and Transitive Dependencies

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

npm ls erxes

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2021-32853, inspect your project dependencies using npm:

npm ls erxes

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

Note: The npm ls erxes command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

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 Erxes, 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

Erxes, an experience operating system (XOS) with a set of plugins, is vulnerable to cross-site scripting in all versions. This results in client-side code execution. The victim must follow a malicious link or be redirected there from malicious web site. There are no known patches.

CVE-2021-32853 Affected Erxes Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
erxes
npm/erxes
npm
≤ 1.0.1

References

NVD — CVE-2021-32853 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-32853
Erxes Source Repository REPOSITORY
https://github.com/erxes/erxes
Erxes Source Repository REPOSITORY
https://github.com/erxes/erxes/blob/f131b49add72032650d483f044d00658908aaf4a/widgets/server/index.ts#L54
Erxes Source Repository REPOSITORY
https://github.com/erxes/erxes/blob/f131b49add72032650d483f044d00658908aaf4a/widgets/server/views/widget.ejs#L14
GitHub Advisory / Wiki ADVISORY
https://securitylab.github.com/advisories/GHSL-2021-103-erxes

Frequently Asked Questions

What is CVE-2021-32853?
CVE-2021-32853 is a security vulnerability in Erxes involving Erxes vulnerable to Cross-site Scripting under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Erxes versions are affected?
Affected versions include releases prior to current release patches across affected packages: erxes.
What version fixes CVE-2021-32853?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is erxes affected?
Yes, erxes is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2021-32853?
CVE-2021-32853 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2021-32853?
CVE-2021-32853 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 npm dependencies for CVE-2021-32853?
Run the dependency tree command: 'npm ls erxes'. 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-g9ph-r9hc-34r8",
  "modified" : "2023-02-22T19:16:24Z",
  "published" : "2023-02-21T00:30:20Z",
  "aliases" : [ "CVE-2021-32853" ],
  "summary" : "Erxes vulnerable to Cross-site Scripting",
  "details" : "Erxes, an experience operating system (XOS) with a set of plugins, is vulnerable to cross-site scripting in all versions. This results in client-side code execution. The victim must follow a malicious link or be redirected there from malicious web site. There are no known patches.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "erxes"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.0.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-32853"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/erxes/erxes"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/erxes/erxes/blob/f131b49add72032650d483f044d00658908aaf4a/widgets/server/index.ts#L54"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/erxes/erxes/blob/f131b49add72032650d483f044d00658908aaf4a/widgets/server/views/widget.ejs#L14"
  }, {
    "type" : "ADVISORY",
    "url" : "https://securitylab.github.com/advisories/GHSL-2021-103-erxes"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-02-22T19:16:24Z",
    "nvd_published_at" : "2023-02-20T23:15:00Z"
  }
}