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TITLE:
Proventia GX5108 and GX5008 Cross-Site Scripting and File Inclusion

SECUNIA ADVISORY ID:
SA25979

VERIFY ADVISORY:
http://secunia.com/advisories/25979/

CRITICAL:
Less critical

IMPACT:
System access

WHERE:
>From remote

OPERATING SYSTEM:
ISS Proventia G/GX Series
http://secunia.com/product/2348/

DESCRIPTION:
Alex Hernandez has reported some vulnerabilities in Proventia GX5108
and GX5008, which potentially can be exploited by malicious people to
conduct cross-site scripting attacks and compromise a vulnerable
system.

1) Input passed to the "reminder" parameter in alert.php is not
properly sanitised before being returned to the administrator. This
can be exploited to execute arbitrary HTML and script code in an
administrator's browser session in context of the web interface.

2) Input passed to the "page" parameter in main.php is not properly
used before being used to include files. This can be exploited to
include arbitrary files from local or remote resources.

Successful exploitation requires valid authentication, but may be
exploited by tricking a logged-in administrator to follow a specially
crafted link.

Note: It is also reported that the used OpenSSH version is vulnerable
to a timing attack which may allow attackers to identify valid user
names.

The vulnerabilities are reported in Proventia GX5108 with firmware
version 1.3 (2006-06-05) and Proventia GX5008 1.5 (2007-06-14). Other
versions may also be affected.

SOLUTION:
Do not browse other sites while being logged in to the administrator
interface.

PROVIDED AND/OR DISCOVERED BY:
Alex Hernandez, Sybsecurity

ORIGINAL ADVISORY:
http://www.sybsecurity.com/hack-proventia-1.pdf

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