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TITLE:
Webmin / Usermin PAM Authentication Bypass Vulnerability

SECUNIA ADVISORY ID:
SA16858

VERIFY ADVISORY:
http://secunia.com/advisories/16858/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass

WHERE:
>From remote

SOFTWARE:
Webmin 1.x
http://secunia.com/product/1115/
Usermin 1.x
http://secunia.com/product/3586/

DESCRIPTION:
A vulnerability has been reported in Webmin and Usermin, which can be
exploited by malicious people to bypass certain security
restrictions.

The vulnerability is caused due to an unspecified error in the
authentication process. This can be exploited to access Webmin or
Usermin without providing a valid username and password.

Successful exploitation requires that full PAM conversations has been
enabled via the Authentication page (not default setting).

The vulnerability has been reported in Webmin versions prior to 1.230
and Usermin versions prior to 1.160.

SOLUTION:
Usermin:
Update to version 1.160.
http://www.webmin.com/udownload.html

Webmin:
Update to version 1.230.
http://www.webmin.com/download.html

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Keigo Yamazaki, Little eArth Corporation.

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
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Secunia NEVER sends attached files with advisories.
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use those supplied by the vendor.

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