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CVE-2020-12640: Local PHP File Inclusion via "Plugin Value" in Roundcube Webmail

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CVE-2020-12640: Local PHP File Inclusion via "Plugin Value" in Roundcube Webmail

A Path Traversal vulnerability exists in Roundcube versions before 1.4.4, 1.3.11 and 1.2.10.

Because the "_plugins_<PLUGIN_NAME>" parameters do not perform sanitization/input filtering, an attacker with access to the Roundcube Installer can leverage a path traversal vulnerability to include arbitrary PHP files on the local system.

Vendor Disclosure:

The vendor's disclosure and fix for this vulnerability can be found here.

Requirements:

This vulnerability requires:

  • Access to the Roundcube Webmail installer component
  • Write access to the target's filesystem

Proof Of Concept:

More details and the exploitation process can be found in this PDF.

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CVE-2020-12640: Local PHP File Inclusion via "Plugin Value" in Roundcube Webmail

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