copyright | disclaimer | privacy | contact  
Australia's Leading Computer Emergency Response Team
 
Search this site

 
On this site

 > HOME
 > About AusCERT
 > Membership
 > Contact Us
 > PKI Services
 > Publications
 > Sec. Bulletins
 > Conferences
 > News & Media
 > Services
 > Web Log
 > Site Map
 > Site Help
 > Member login





 

ESB-2014.0714 - [Win][UNIX/Linux] IBM Security Directory Server: Denial of service - Remote/unauthenticated

Date: 13 May 2014
References: ESB-2014.0679  ESB-2014.0764  ESB-2014.0782  ESB-2014.0783  ESB-2014.0815  ESB-2014.0819  ESB-2014.0821  ESB-2014.0838  ESB-2014.0878  ESB-2014.0880  
ESB-2014.0983  ESB-2014.0984  

Click here for printable version
Click here for PGP verifiable version
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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

                               ESB-2014.0714
        Security Bulletin: IBM Security Directory Server CPU utili
                          zation (CVE-2014-0963)
                                13 May 2014

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

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

Product:           IBM Security Directory Server
Publisher:         IBM
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-0963  

Reference:         ESB-2014.0679

Original Bulletin: 
   http://www-01.ibm.com/support/docview.wss?uid=swg21672724

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

Security Bulletin: IBM Security Directory Server CPU utilization 
(CVE-2014-0963)

Security Bulletin

Document information

More support for:
IBM Security Directory Server

Software version:
6.1, 6.2, 6.3, 6.3.1

Operating system(s):
All Platforms

Reference #:
1672724

Modified date:
2014-05-09


Summary

IBM Security Directory Server is affected by a problem related to the SSL 
implementation which, under very specific conditions, can cause CPU 
utilization to rapidly increase.

Vulnerability Details

CVE ID:
CVE-2014-0963

DESCRIPTION:
IBM Security Directory Server is affected by a problem with the handling of 
certain SSL messages. The TLS implementation can, under very specific 
conditions, cause CPU utilization to rapidly increase. The situation occurs 
only in a certain error case that causes a single thread to begin looping. If 
this happens multiple times, more threads will begin to loop and an increase 
in CPU utilization will be seen. This increase could ultimately result in CPU 
exhaustion and unresponsiveness of the IBM Security Directory Server and other 
software running on the affected system.

This issue can affect the availability of the system, but does not impact 
system confidentiality or integrity. This vulnerability can be remotely 
exploited, authentication is not required and the exploit is moderately 
complex.

To determine if your systems are being affected by this issue, you can monitor 
the CPU utilization for IBM Security Directory Server instances.


CVSS Base Score: 7.1
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/92844 
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:N/A:C)

Affected Products and Versions

All versions of IBM Security Directory Server (ISDS): 6.1.0, 6.2.0, 6.3.0, 
6.3.1

Remediation/Fixes

IBM has provided patches for all affected versions. Follow the installation 
instructions in the README files included with the patch.

Affected Version   Fix
ISDS 6.1.0         6.1.0.61-ISS-ITDS
ISDS 6.2.0         6.2.0.36-ISS-ITDS
ISDS 6.3.0         6.3.0.30-ISS-ITDS
ISDS 6.3.1         6.3.1.2-ISS-ISDS

Workarounds and Mitigations

Monitor CPU utilization of your Program Name instances. If utilization becomes 
abnormally high, stop and restart the affected instance.

References
Complete CVSS Guide
On-line Calculator V2
CVE-2014-0963
http://xforce.iss.net/xforce/xfdb/92844

Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

*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--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        http://www.auscert.org.au/render.html?cid=1980

===========================================================================
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)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=IuEK
-----END PGP SIGNATURE-----