[NEWS] Webcache Client Requests Bypass OHS mod_access Restrictions

From: SecuriTeam (support_at_securiteam.com)
Date: 04/27/05

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    To: list@securiteam.com
    Date: 27 Apr 2005 19:07:58 +0200
    
    

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      Webcache Client Requests Bypass OHS mod_access Restrictions
    ------------------------------------------------------------------------

    SUMMARY

    A vulnerability in Oracle's Webcache allows attackers to access protected
    URLs by using webcache.

    DETAILS

    Vulnerable Systems:
     * Oracle Application Server version 10.x - OHS version 1.0.2

    Example:
    (Port 7778 = Webcache, Port 7779 = OHS)

    The following URLs are NOT protected if you access them via the Webcache
    server:
    http://server01:7778/dmsoc4j/AggreSpy?format=metrictable&nountype=ohs_child&orderby=Name
    http:// server01:7778/server-status
    http:// server01:7778/dms0

    The following URLs are protected if you access them via the OHS server:
    http://server01:7779/dmsoc4j/AggreSpy?format=metrictable&nountype=ohs_child&orderby=Name
    http:// server01:7779/server-status
    http:// server01:7779/dms0

    Workaround:
    Add "UseWebCacheIP ON" to Oracle's httpd.conf configuration file.

    Patch:
    Oracle addressed this issue by introducing the parameter "UseWebcacheIP"
    to the Oracle HTTP Server(OHS).

    References:
     
    <http://metalink.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=263943.1> http://metalink.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=263943.1

    Disclosure Timeline:
    01-oct-2003 Oracle secalert was informed
    01-oct-2003 Bug confirmed
    26-apr-2005 Red-Database-Security published this advisory

    ADDITIONAL INFORMATION

    The information has been provided by
    <mailto:ak@red-database-security.com> Kornbrust, Alexander.
    The original article can be found at:
    <http://www.red-database-security.com/advisory/oracle_webcache_bypass.html> http://www.red-database-security.com/advisory/oracle_webcache_bypass.html

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