From: Secunia Security Advisories (sec-advsecunia.com)
Date: Mon Feb 28 2005 - 06:50:09 CST

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TITLE:
CIS WebServer Directory Traversal Vulnerability

SECUNIA ADVISORY ID:
SA14392

VERIFY ADVISORY:
http://secunia.com/advisories/14392/

CRITICAL:
Moderately critical

IMPACT:
Exposure of sensitive information, Exposure of system information

WHERE:
From remote

SOFTWARE:
CIS WebServer 3.x
http://secunia.com/product/4714/

DESCRIPTION:
CorryL has reported a vulnerability in CIS WebServer, which can be
exploited by malicious people to gain knowledge of potentially
sensitive information.

The vulnerability is caused due to an input validation error and can
be exploited to read the contents of arbitrary files outside the web
root via directory traversal attacks.

The vulnerability has been reported in version 3.5.13. Other versions
may also be affected.

SOLUTION:
Filter malicious characters and character sequences in a proxy or
firewall with URL filtering capabilities.

The impact of directory traversal attacks can be lessened by placing
the web root on a separate drive letter, or by restricting access
using file system restrictions.

PROVIDED AND/OR DISCOVERED BY:
CorryL

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