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