Security Bulletin: IBM Security Network Protection System CPU utilization (CVE-2014-0963)

Summary

IBM Security Network Protection System 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 Network Protection System 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 Network Protection System 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 Network Protection System instances.

CVSS Base Score: 7.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/92844 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:N/A:C)

Affected Products and Versions

**Products:IBM Security Network Protection****(XGS)**models 3100, 4100, 5100

Firmware versions: 5.1, 5.1.1, 5.1.2, 5.1.2.1, 5.2

Remediation/Fixes

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

5.1.0.0-ISS-XGS-All-Models-Hotfix-FP0009 for IBM Security Network Protection products at version 5.1
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=Security%2BSystems&product=ibm/Tivoli/IBM+Security+Network+Protection&release=5.1&platform=Windows&function=all

5.1.1.0-ISS-XGS-All-Models-Hotfix-FP0004 for IBM Security Network Protection products at version 5.1.1
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=Security%2BSystems&product=ibm/Tivoli/IBM+Security+Network+Protection&release=5.1.1&platform=Windows&function=all

5.1.2.0-ISS-XGS-All-Models-Hotfix-FP0005 for IBM Security Network Protection products at version 5.1.2
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=Security%2BSystems&product=ibm/Tivoli/IBM+Security+Network+Protection&release=5.1.2&platform=Windows&function=all

5.1.2.1-ISS-XGS-All-Models-Hotfix-FP0001 for IBM Security Network Protection products at version 5.1.2.1
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=Security%2BSystems&product=ibm/Tivoli/IBM+Security+Network+Protection&release=5.1.2&platform=Windows&function=all

5.2.0.0-ISS-XGS-All-Models-Hotfix-FP0001 for IBM Security Network Protection products at version 5.2
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=Security%2BSystems&product=ibm/Tivoli/IBM+Security+Network+Protection&release=5.2&platform=Windows&function=all

Workarounds and Mitigations

None