IBM Lotus Foundation: Multiple vulnerabilities

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2014.0068
       Security Bulletin: IBM Lotus Foundation Samba vulnerabilities
                              17 January 2014

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

Product:           IBM Lotus Foundation
Publisher:         IBM
Operating System:  Linux variants
Impact/Access:     Root Compromise     -- Existing Account
                   Unauthorised Access -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2013-4408 CVE-2012-6150 

Reference:         ESB-2014.0019
                   ESB-2013.1761.2
                   ESB-2013.1752

Original Bulletin: 
   http://www-01.ibm.com/support/docview.wss?uid=swg21660405

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Security Bulletin: IBM Lotus Foundation Samba vulnerabilities (CVE-2013-4408,
CVE-2012-6150)

Security Bulletin

Document information

More support for:

Lotus Foundations Start

Software version:

1.2

Operating system(s):

Linux

Software edition:

All Editions

Reference #:

1660405

Modified date:

2014-01-15

Summary

Multiple vulnerabilities exist in the Samba function used by Lotus Foundations
core that could allow an attacker to obtain higher privileges.

Vulnerability Details

CVE ID: CVE-2013-4408

DESCRIPTION: This is a critical vulnerability as the Samba DCE-RPC client code
is part of the winbindd authentication and identity mapping daemon, which is 
is used by Lotus Foundations servers when configured as an Active Directory 
member. A malicious Active Directory Domain Controller or man-in-the-middle 
attacker impersonating an Active Directory Domain Controller could achieve 
root-level access by compromising the winbindd process.

CVSS:

CVSS Base Score: 7.5

CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/89533 for the 
current score

CVSS Environmental Score*: Undefined

CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVE ID: CVE-2012-6150

DESCRIPTION: Resolve low impact Samba vulnerability that allows login from 
authenticated users if the require_membership_of parameter specifies only 
invalid group names.

CVSS:

CVSS Base Score: 4.0

CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/89382 for the 
current score

CVSS Environmental Score*: Undefined

CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P)

Affected Products

Systems running Lotus Foundations 1.2.2c or earlier:

Lotus Foundations Start 1.2

Remediation/Fixes

Upgrade the Lotus Foundations operating system to version 1.2.2d or later. 
Prior to performing the upgrade, you should ensure you have a current backup 
of your system.

For instructions on how to upgrade your system, please see: Migrate the IBM 
Lotus Foundations core

Workarounds/Mitigations

Configure Lotus Foundations Samba ("windows file server") to be in stand alone
mode.

References:

Complete CVSS Guide

On-line Calculator V2

Change History

15 January 2014: Original copy 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.

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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