Details
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Software: WordPress Download Manager
Version: 2.9.46,2.9.51
Homepage: https://wordpress.org/plugins/download-manager/
Advisory report: https://security.dxw.com/advisories/xss-download-manager/
CVE: Awaiting assignment
CVSS: 5.8 (Medium; AV:N/AC:M/Au:N/C:P/I:P/A:N)

Description
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Reflected XSS in WordPress Download Manager could allow an attacker to do almost anything an admin can

Vulnerability
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This plugin outputs $_GET[aida] inside HTML without escaping, meaning that anybody able to convince an admin to follow a link can add arbitrary HTML to the page.

Proof of concept
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Sign in
Activate the plugin
Visit the following URL in a browser without XSS mitigation (i.e. Firefox): https://localhost/wp-admin/admin-ajax.php?action=wpdm_generate_password&id=%3C/script%3E%3Cscript%3Ealert(1)%3C/script%3E


Mitigations
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Upgrade to version 2.9.52 or later.

Disclosure policy
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dxw believes in responsible disclosure. Your attention is drawn to our disclosure policy: https://security.dxw.com/disclosure/

Please contact us on security@dxw.com to acknowledge this report if you received it via a third party (for example, plugins@wordpress.org) as they generally cannot communicate with us on your behalf.

This vulnerability will be published if we do not receive a response to this report with 14 days.

Timeline
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2017-03-30: Discovered
2017-05-26: Reported toA contact@w3eden.com
2017-06-09: First response from vendor saying itas been fixed and an update will be coming soon
2017-06-09: Version 2.9.52 released aFixed issue with input data formattinga
2017-06-16: Advisory published



Discovered by dxw:
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Tom Adams
Please visit security.dxw.com for more information.