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ESB-2016.0671 - [UNIX/Linux] IBM Tivoli Provisioning Manager: Execute arbitrary code/commands - Remote/unauthenticated

Date: 11 March 2016
References: ASB-2016.0017  ESB-2016.0580  ASB-2016.0020  ESB-2016.0596  ESB-2016.0602  ESB-2016.0606  ESB-2016.0631  ESB-2016.0632  

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2016.0671
   Security Bulletin: GNU C library (glibc) vulnerability affects Tivoli
             Provisioning Manager for OS deployment and Tivoli
              Provisioning Manager for Images (CVE-2015-7547)
                               11 March 2016

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

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

Product:           IBM Tivoli Provisioning Manager
Publisher:         IBM
Operating System:  UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2015-7547  

Reference:         ASB-2016.0020
                   ASB-2016.0017
                   ESB-2016.0632
                   ESB-2016.0631
                   ESB-2016.0606
                   ESB-2016.0602
                   ESB-2016.0596
                   ESB-2016.0580

Original Bulletin: 
   https://www-304.ibm.com/support/docview.wss?uid=swg21978194

- --------------------------BEGIN INCLUDED TEXT--------------------

Security Bulletin: GNU C library (glibc) vulnerability affects Tivoli 
Provisioning Manager for OS deployment and Tivoli Provisioning Manager for 
Images (CVE-2015-7547)

Document information

More support for:

Tivoli Provisioning Manager for OS Deployment

Software version:

7.1, 7.1.1

Operating system(s):

Platform Independent

Reference #:

1978194

Modified date:

2016-03-10

Security Bulletin

Summary

A GNU C library (glibc) stack-based buffer overflow in getaddrinfo() 
vulnerability affects Tivoli Provisioning Manager for OS Deployment and Tivoli
Provisioning Manager for Images

Vulnerability Details

CVE ID: CVE-2015-7547

DESCRIPTION: GNU C Library (glibc) is vulnerable to a stack-based buffer 
overflow, caused by improper bounds checking by the nss_dns backend for the 
getaddrinfo() function when performing dual A/AAAA DNS queries. By sending a 
specially crafted DNS response, a remote attacker could overflow a buffer and
execute arbitrary code on the system or cause the application to crash.

CVSS:

CVSS Base Score: 8.1

CVSS Temporal Score: See 
https://exchange.xforce.ibmcloud.com/vulnerabilities/110662 for the current 
score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

IBM Tivoli Provisioning Manager for Images 7.1.1.x

IBM Tivoli Provisioning Manager for OS Deployment 7.1.1.x

IBM Tivoli Provisioning Manager for Images (and System X Edition) 7.1.1.x

Remediation/Fixes

Customers using IBM Tivoli Provisioning Manager for OS Deployment 7.1.1x or 
IBM Tivoli Provisioning Manager for Images 7.1.1.x should apply the IBM Tivoli
Provisioning Manager for OS Deployment/Images Fix Pack 20 (7.1.1.20) or later.

The latest Fix Packs are available at this link: 
http://www.ibm.com/support/fixcentral.

After the updates have been applied, any process using glibc must be 
restarted. Given that nearly all system processes use glibc; rebooting of 
targets that are in idle state and that display label Linux DE at bottom 
right, after upgrading is suggested.

IBM recommends that you review your entire environment to identify vulnerable
releases of glibc including your Operating Systems and take appropriate 
mitigation and remediation actions. Please contact your Operating System 
provider for more information.

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

Subscribe to My Notifications to be notified of important product support 
alerts like this.

References

Complete CVSS v3 Guide

On-line Calculator v3

Related information

IBM Secure Engineering Web Portal

IBM Product Security Incident Response Blog

Change History

10 March 2016 Original Version Published

*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 Security Bulletin.

Disclaimer

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.

- --------------------------END INCLUDED TEXT--------------------

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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
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                On call after hours for member emergencies only.
===========================================================================
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