[UNIX] OpenBB Forums Vulnerable to SQL Injection

support_at_securiteam.com
Date: 04/28/03

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Date: 28 Apr 2003 16:38:33 +0200

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      OpenBB Forums Vulnerable to SQL Injection
    ------------------------------------------------------------------------

    SUMMARY

     <http://www.openbb.co.uk/> OpenBB is "a forum engine written in the PHP
    language that uses MySQL database as its back-end". Multiple SQL injection
    vulnerabilities have been discovered in the product allowing remote
    attackers to cause the product to execute arbitrary SQL statements.

    DETAILS

    Vulnerable systems:
     * OpenBB forums version 1.1.0

    It is possible, as in other similar cases of SQL injection, to extract
    information from database via these vulnerabilities. If a vulnerable host
    is using MySQL 3 we are required to use the LIKE method(*). However, if
    MySQL's version 4 is used we are allowed to use UNION, which makes the
    vulnerability easier to exploit.

    To exploit this vulnerability only need to add a extra space (or %20)
    behind the number, followed by our SQL statement.

    Examples:
            http://vulnerable/index.php?CID=1 <something>

    SELECT guest, forumid, title, lastthread, lastposter, lastposterid,
    lastthreadid, lastpost, moderators, description, type, postcount,
    threadcount, forumkey FROM obb_forum_display WHERE parent = 3 <something>
    ORDER BY displayorder

            http://vulnerable/board.php?FID=2 <something>

    SELECT title, threadcount, type, hidden_topics, forumkey FROM
    obb_forum_display WHERE forumid = 2 <something>

            http://vulnerable/member.php?action=profile&UID=1 <something>

    SELECT * FROM obb_customvalues v INNER JOIN obb_custompermis p ON
    p.fieldid = v.fieldid INNER JOIN obb_customfields f on f.fieldid=v.fieldid
    WHERE v.userid=1 <something> AND p.canviewothers='t' AND p.groupid='0'

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:ripe@7a69ezine.org> Albert
    Puigsech Galicia.

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