Security Bulletin: Vulnerability in RC4 stream cipher affects IBM Tealeaf Customer Experience (CVE-2015-2808)

Summary

The RC4 “Bar Mitzvah” Attack for SSL/TLS affects IBM Tealeaf Customer Experience.

Vulnerability Details

CVEID: CVE-2015-2808 DESCRIPTION: The RC4 algorithm, as used in the TLS protocol and SSL protocol, could allow a remote attacker to obtain sensitive information. An attacker could exploit this vulnerability to remotely expose account credentials without requiring an active man-in-the-middle session. Successful exploitation could allow an attacker to retrieve credit card data or other sensitive information. This vulnerability is commonly referred to as “Bar Mitzvah Attack”.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/101851 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N)

Affected Products and Versions

IBM Tealeaf Customer Experience: v8.0-v9.0.1

Remediation/Fixes

Product

|

VRMF

|

Remediation/First Fix

—|—|—

IBM Tealeaf Customer Experience

|

9.0.1A

| PCA: https://www.ibm.com/support/entry/portal/search_results?sn=spe&filter=keywords:ibmsupportfixcentralsearch&q=9.0.1A_IBMTealeaf_PCA-3724-4_SecurityRollup_FixPack
Tealeaf CX: https://www.ibm.com/support/entry/portal/search_results?sn=spe&filter=keywords:ibmsupportfixcentralsearch&q=9.0.1.5091_9.0.1A_IBMTealeaf_CXUpgrade_FixPack4

IBM Tealeaf Customer Experience

|

9.0.1

| PCA: https://www.ibm.com/support/entry/portal/search_results?sn=spe&filter=keywords:ibmsupportfixcentralsearch&q=9.0.1_IBMTealeaf_PCA-3673-4_SecurityRollup_FixPack
Tealeaf CX: https://www.ibm.com/support/entry/portal/search_results?sn=spe&filter=keywords:ibmsupportfixcentralsearch&q=9.0.1.1097_IBMTealeaf_CXUpgrade_FixPack4

IBM Tealeaf Customer Experience

|

9.0.0, 9.0.0A

| You can contact the Technical Support team for guidance.

IBM Tealeaf Customer Experience

|

8.8

| PCA: https://www.ibm.com/support/entry/portal/search_results?sn=spe&filter=keywords:ibmsupportfixcentralsearch&q=8.8_IBMTealeaf_PCA-3625-4_SecurityRollup_FixPack
Tealeaf CX: https://www.ibm.com/support/entry/portal/search_results?sn=spe&filter=keywords:ibmsupportfixcentralsearch&q=8.8.0.9034_IBMTealeaf_CXUpgrade_FixPack8

IBM Tealeaf Customer Experience

|

8.7

| PCA: https://www.ibm.com/support/entry/portal/search_results?sn=spe&filter=keywords:ibmsupportfixcentralsearch&q=8.7_IBMTealeaf_PCA-3615-4_SecurityRollup_FixPack
Tealeaf CX: https://www.ibm.com/support/entry/portal/search_results?sn=spe&filter=keywords:ibmsupportfixcentralsearch&q=8.7.1.8830_IBMTealeaf_CXUpgrade_FixPack9

IBM Tealeaf Customer Experience

|

8.6 and earlier

| You can contact the Technical Support team for guidance.
For v9.0.0, 9.0.0A, and versions before v8.7, IBM recommends upgrading to a later supported version of the product.
You should verify applying these fixes do not cause any compatibility issues. The fix disables RC4 stream cipher by default. If you change the default setting after applying the fix, you will expose yourself to the attack described above. IBM recommends that you review your entire environment to identify other areas where you have enabled the RC4 stream cipher and take appropriate mitigation and remediation actions.

Workarounds and Mitigations

PCA: In addition to applying the fix pack above, you must update the /opt/tealeaf/etc/httpd.conf file by:

• adding (or changing if already present) a line beginning “SSLProtocol” so that it reads
  SSLProtocol All -SSLv2 -SSLv3
• changing the line beginning “SSLCipherSuite” by replacing the string “RC4+RSA” with “!RC4” so that it reads:
  SSLCipherSuite ALL:!ADH:!EXP:!RC4:+HIGH:+MEDIUM
  You should verify applying this configuration change does not cause any compatibility issues. Not disabling the RC4 stream cipher will expose yourself to the attack described above. IBM recommends that you review your entire environment to identify other areas where you have enabled the RC4 stream cipher and take appropriate mitigation and remediation actions.