Security Bulletin: Vulnerability in RC4 stream cipher affects the Enterprise Common Collector component of the IBM Tivoli zEnterprise Monitoring Agent (CVE-2015-2808)

Summary

The RC4 “Bar Mitzvah” Attack for SSL/TLS affects the Enterprise Common Collector (a component of IBM Tivoli zEnterprise Monitoring Agent, a component of IBM Tivoli Monitoring).

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&gt; 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

Enterprise Common Collector 1.1.0 (a component of IBM Tivoli zEnterprise Monitoring Agent, a component of IBM Tivoli Monitoring v6.2.3 and v6.3.0)

Remediation/Fixes

Product

|

VRMF

|

Operating System

|

Remediation/First Fix

—|—|—|—

IBM Tivoli zEnterprise Monitoring Agent (Enterprise Common Collector v1.1.0 component)

|

v6.2.3

| AIX®|

Fix Central link

Linux® on System z®|

Fix Central link

Linux® on Intel® 32-bit|

Fix Central link

Linux® on Intel® 64-bit|

Fix Central link

32-bit Windows®|

Fix Central link

64-bit Windows®|

Fix Central link

You should verify applying this fix does not cause any compatibility issues. The fix disables RC4 stream cipher by default. If you change this setting 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

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.