[UNIX] MyDMS SQL Injection and Directory Traversal Vulnerabilities

From: SecuriTeam (support_at_securiteam.com)
Date: 08/22/04

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Date: 22 Aug 2004 17:23:02 +0200

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      MyDMS SQL Injection and Directory Traversal Vulnerabilities
    ------------------------------------------------------------------------

    SUMMARY

     <http://dms.markuswestphal.de/about.html> MyDMS is an open-source
    document-management-system based on PHP and MySQL published under the GPL.

    MyDMS allows malicious users to view and download files via a directory
    traversal bug and also allows remote attackers to insert arbitrary SQL
    code.

    DETAILS

    Vulnerable Systems:
     * MyDMS versions prior to 1.4.2

    Immune Systems:
     * MyDMS version 1.4.2 or newer (SQL injection vulnerability)

    An SQL Injection vulnerability found in the file
    /demo/out/out.ViewFolder.php. The parameter "FolderId" is not correctly
    sanitized and an attacker can inject any SQL valid command. An example is
    given below:
    http://>/demo/out/out.ViewFolder.php?folderid=3 or 1=1as

    Note: Using 1=1as makes the query fails but returns the complete SQL query
    give to the database server.

    The directory traversal bug is exploitable by registered users only but
    allows them to view any file by inserting text such as the following to a
    parameter:
    ./../../../../etc/passwd

    This vulnerability is pretty straightforward and will allow an attacker to
    gather a lot of information about the system that would allow better
    degrees of creative attack to be performed.

    Vendor Status:
    The vendor has been contacted and the SQL injection vulnerability has been
    fixed. However, the directory traversal bug is persistent even in the
    newer version.

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:joxeankoret@yahoo.es> Joxean
    Koret.

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