AusCERT - ESB-2010.0633 - [AIX] ToolTalk: Execute arbitrary code/commands

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ESB-2010.0633 - [AIX] ToolTalk: Execute arbitrary code/commands - Remote/unauthenticated
Date: 20 July 2010
References: ASB-2010.0168

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2010.0633
           ToolTalk rpc.ttdbserver database parser vulnerability
                               20 July 2010

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           ToolTalk
Publisher:         IBM
Operating System:  AIX
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2010-0083  

Reference:         ASB-2010.0168

Original Bulletin: 
   http://aix.software.ibm.com/aix/efixes/security/tooltalk_advisory.asc

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IBM SECURITY ADVISORY

First Issued: Fri Jul 16 18:42:09 CDT 2010

The most recent version of this document is available here:

http://aix.software.ibm.com/aix/efixes/security/tooltalk_advisory.asc

                           VULNERABILITY SUMMARY

VULNERABILITY:   ToolTalk rpc.ttdbserver database parser vulnerability

PLATFORMS:       AIX 5.3, 6.1, and earlier releases
                 VIOS 1.5, 2.1, and earlier releases

SOLUTION:        Apply the fix or workaround as described below.

THREAT:		 Successful exploitation of this issue could allow the
		 attacker to execute arbitrary code on an affected system.

CERT VU Number:  N/A
CVE Number:      CVE-2010-0083

Reboot required?    NO
Workarounds?        YES
Protected by FPM?   NO
Protected by SED?   NO

                           DETAILED INFORMATION

I. DESCRIPTION 

    "This vulnerability can be triggered by creating a fake database
    (.rec file) on the system and calling remote procedure 7 of 
    ToolTalk database server pointing to this database, leading to a
    heap overflow. Remote command execution can be achieved if you 
    can place files on the host via FTP or HTTP servers for example."

    Please see the following for more information:
    http://archives.neohapsis.com/archives/fulldisclosure/2010-07/0199.html

II. PLATFORM VULNERABILITY ASSESSMENT

    Note: To use the following commands on VIOS you must first
    execute:

    oem_setup_env

    To determine if your system is vulnerable, execute the following
    command:

    lslpp -L X11.Dt.ToolTalk

    The following fileset levels are vulnerable:

    AIX Fileset        Lower Level       Upper Level
    ------------------------------------------------
    X11.Dt.ToolTalk       5.3.8.0	 5.3.8.9
    X11.Dt.ToolTalk       5.3.9.0	 5.3.9.6
    X11.Dt.ToolTalk       5.3.10.0	 5.3.10.3
    X11.Dt.ToolTalk       5.3.11.0	 5.3.11.3
    X11.Dt.ToolTalk       6.1.1.0	 6.1.1.7
    X11.Dt.ToolTalk       6.1.2.0	 6.1.2.6
    X11.Dt.ToolTalk       6.1.3.0	 6.1.3.3
    X11.Dt.ToolTalk       6.1.4.0	 6.1.4.3
 
III. SOLUTION

    A. FIXES

	APARS are available for all supported releases.

    B. APARS

        IBM has assigned the following APARs to this problem:

        AIX Level           APAR number        Service pack date
        --------------------------------------------------------
        5.3.8               IZ72090            5/19/10 sp10
        5.3.9               IZ72091            5/19/10 sp7
        5.3.10              IZ72092            5/19/10 sp4
        5.3.11              IZ72093            5/19/10 sp4
        6.1.1               IZ72094            4/21/10 sp8
        6.1.2               IZ72095            4/21/10 sp7
        6.1.3               IZ72096            4/21/10 sp4
        6.1.4               IZ72097            4/21/10 sp4


        Subscribe to the APARs here:

        http://www.ibm.com/support/docview.wss?uid=isg1IZ72090
        http://www.ibm.com/support/docview.wss?uid=isg1IZ72091
        http://www.ibm.com/support/docview.wss?uid=isg1IZ72092
        http://www.ibm.com/support/docview.wss?uid=isg1IZ72093
        http://www.ibm.com/support/docview.wss?uid=isg1IZ72094
        http://www.ibm.com/support/docview.wss?uid=isg1IZ72095
        http://www.ibm.com/support/docview.wss?uid=isg1IZ72096
        http://www.ibm.com/support/docview.wss?uid=isg1IZ72097

        By subscribing, you will receive periodic email alerting you
        to the status of the APAR, and a link to download the service
        pack when it becomes available.

IV. WORKAROUND

    Don't run rpc.ttdbserver. Comment the entry for ttdbserver from 
    /etc/inetd.conf and refresh the instance of inetd. This can
    be done by running the following command.

    /usr/bin/refresh -s inetd 

VI. CONTACT INFORMATION

    If you would like to receive AIX Security Advisories via email,
    please visit:
 
        http://www.ibm.com/systems/support
 
    and click on the "My notifications" link.
 
    To view previously issued advisories, please visit:
 
        http://www14.software.ibm.com/webapp/set2/subscriptions/pqvcmjd
 
    Comments regarding the content of this announcement can be
    directed to:

        security-alert@austin.ibm.com
 
    To obtain the PGP public key that can be used to communicate
    securely with the AIX Security Team you can either:

        A. Send an email with "get key" in the subject line to:

            security-alert@austin.ibm.com

        B. Download the key from our web page:

  http://www.ibm.com/systems/resources/systems_p_os_aix_security_pgpkey.txt

        C. Download the key from a PGP Public Key Server. The key ID is:

            0x28BFAA12
 
    Please contact your local IBM AIX support center for any
    assistance.
 
    eServer is a trademark of International Business Machines
    Corporation.  IBM, AIX and pSeries are registered trademarks of
    International Business Machines Corporation.  All other trademarks
    are property of their respective holders.

VII. ACKNOWLEDGMENTS

    This vulnerability was discovered and exploited by Rodrigo Rubira Branco.

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