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Webmin / Usermin Cross-Site Scripting and Source Code Disclosure
Secunia Advisory: SA21690
Release Date: 2006-09-01
Last Update: 2006-09-21
Popularity: 10,923 views

Critical:
Moderately critical
Impact: Cross Site Scripting
Exposure of sensitive information
Where: From remote
Solution Status: Vendor Patch

Software:Usermin 1.x
Webmin 1.x

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CVE reference:CVE-2006-4542


Description:
Two vulnerabilities have been reported in Webmin and Usermin, which can be exploited by malicious people to conduct cross-site scripting attacks and disclose potentially sensitive information.

1) Some input passed in a NULL character ("%00") in the URL isn't properly verified before being used. This can be exploited to disclose the source code of arbitrary CGI and Perl programs.

2) Some input passed in a NULL character ("%00") in the URL isn't properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.

The vulnerabilities have been reported in the following versions:
* Webmin versions prior to 1.296.
* Usermin versions prior to 1.226.

Solution:
Webmin:
Update to version 1.300.

Usermin:
Update to version 1.230.

Provided and/or discovered by:
The vendor credits Keigo Yamazaki, Little eArth Corporation.

Changelog:
2006-09-01: Updated "Description" section and added link to original advisory.
2006-09-05: Added link to original advisory in English.
2006-09-08: Added CVE reference.
2006-09-21: Updated "Solution" section.

Original Advisory:
http://www.lac.co.jp/business/sns/intelligence/SNSadvisory_e/89_e.html


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