Operating System:

[AIX]

Published:

24 April 2014

Protect yourself against future threats.

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2014.0591
                  Security vulnerability in Perl for AIX
                               24 April 2014

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

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

Product:           Perl
Publisher:         IBM
Operating System:  AIX
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2012-6329  

Reference:         ASB-2012.0177
                   ESB-2013.1195
                   ESB-2013.0573
                   ESB-2013.0444

Original Bulletin: 
   http://aix.software.ibm.com/aix/efixes/security/perl_advisory4.asc

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IBM SECURITY ADVISORY

First Issued: Wed Apr 23 17:08:11 CST 2014

The most recent version of this document is available here:

http://aix.software.ibm.com/aix/efixes/security/perl_advisory4.asc
https://aix.software.ibm.com/aix/efixes/security/perl_advisory4.asc
ftp://aix.software.ibm.com/aix/efixes/security/perl_advisory4.asc
===============================================================================
                           VULNERABILITY SUMMARY

VULNERABILITY:   Security vulnerability in Perl for AIX

PLATFORMS:       5.3, 6.1, and 7.1
                 VIOS 2.2.1

SOLUTION:        Apply the fix as described below.

THREAT:          See below.

CVE Number:      CVE-2012-6329

Reboot required?    NO
Workarounds?        NO
Protected by FPM?   NO
Protected by SED?   NO
===============================================================================
                           DETAILED INFORMATION

I. DESCRIPTION

    CVE-2012-6329
    -------------
    The _compile function in Maketext.pm in the Locale::Maketext implementation
    in Perl before 5.17.7 does not properly handle backslashes and fully 
    qualified method names during compilation of bracket notation, which allows
    context-dependent attackers to execute arbitrary commands via crafted input
    to an application that accepts translation strings from users.

II. CVSS

    CVE-2012-6329
    CVSS Base Score: 7.5
    CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/80566 for
    the current score
    CVSS Environmental Score*: Undefined
    CVSS String: (AV:N/AC:L/Au:N/C:P/I:P/A:P)

III. PLATFORM VULNERABILITY ASSESSMENT

    The following fileset levels are vulnerable:

    AIX Fileset        AIX Level       Lower Level       Upper Level
    ----------------------------------------------------------------
    perl.rte           5.3.12          5.8.8.0           5.8.8.123
    perl.rte           6.1.7           5.8.8.0           5.8.8.122
    perl.rte           6.1.8           5.8.8.0           5.8.8.244
    perl.rte           6.1.9           5.8.8.0           5.8.8.366
    perl.rte           7.1.1           5.10.1.0          5.10.1.100
    perl.rte           7.1.2           5.10.1.0          5.10.1.150
    perl.rte           7.1.3           5.10.1.0          5.10.1.200

    VIOS
    ----------------------------------------------------------------
    perl.rte versions 5.8.8.0 to 5.8.8.366 on VIOS 2.2.1.0 and above.

    Note: To find out whether the affected filesets are installed on your
    systems, refer to the lslpp command found in AIX user's guide.

IV. SOLUTIONS

    A. APARS

        IBM has assigned the following APARs to this problem:

        AIX Level           APAR number        Availability
        ---------------------------------------------------
        5.3                 IV56641            NOW
        6.1                 IV56641            NOW
        7.1                 IV56642            NOW

        VIOS Level          APAR number        Availability
        ---------------------------------------------------
        2.2.1.0 and up      IV56641            NOW

        Subscribe to the APARs here:

        http://www.ibm.com/support/docview.wss?uid=isg1IV56641
        http://www.ibm.com/support/docview.wss?uid=isg1IV56642

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

    B. FIXES

        Fixes are available.  The fixes can be downloaded via http
        from:

		https://www14.software.ibm.com/webapp/iwm/web/preLogin.do?source=aixbp

		The perl name provided in the web pack site
        For 5.3:	perl61.zip
        For 6.1:	perl61.zip
        For 7.1:	perl71.zip
        For VIOS:   perl61.zip

        To extract the fixes from the zip files:
        For 5.3: 	gunzip -S .zip perl61.zip
        For 6.1: 	gunzip -S .zip perl61.zip
        For 7.1:	gunzip -S .zip perl71.zip
        For VIOS:   gunzip -S .zip perl61.zip

		IMPORTANT: It is recommended that a mksysb backup of the system be
		created. Verify that this image is both bootable and readable
		before proceeding.

		To preview the fix installation:

   			installp -apYd . perl			

		To install the fix package:
	
			installp -aXYd . perl
		
V. WORKAROUNDS

     There are no workarounds.

VI. CONTACT INFORMATION

    If you would like to receive AIX Security Advisories via email,
    please visit:

    http://www.ibm.com/support/mynotifications

    To view previously issued advisories, please visit:

        http://www14.software.ibm.com/webapp/set2/subscriptions/onvdq
 
    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

    IBM discovered and fixed this vulnerability as part of its
    commitment to secure the AIX operating system.

VIII. REFERENCES:

    Complete CVSS Guide: http://www.first.org/cvss/cvss-guide.html
    On-line Calculator V2: http://nvd.nist.gov/cvss.cfm?calculator&adv&version=2
    X-Force Vulnerability Database: http://xforce.iss.net/xforce/xfdb/80566
    CVE-2012-6329: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-6329

    *The CVSS Environment Score is customer environment specific and will
    ultimately impact the Overall CVSS Score. Customers can evaluate the
    impact of this vulnerability in their environments by accessing the links
    in the Reference section of this Flash.

    Note: According to the Forum of Incident Response and Security Teams
    (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry
    open standard designed to convey vulnerability severity and help to
    determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES
    "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF
    MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE
    RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY
    VULNERABILITY.

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