Security Bulletin: Vulnerability in RC4 stream cipher affects IBM Security Network Intrusion Prevention System (CVE-2015-2808)

Summary

The RC4 “Bar Mitzvah” Attack for SSL/TLS affects IBM Security Network Intrusion Prevention System.

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

Products: GX3002, GX4002, GX4004, GX4004-v2, GX5008, GX5008-v2, GX5108, GX5108-v2, GX5208, GX5208-v2, GX6116, GX7412, GX7412-10, GX7412-05, GX7800, GV200, GV1000

Firmware versions 4.6.2, 4.6.1, 4.6, 4.5, 4.4, and 4.3

Remediation/Fixes

Product

| VRMF| Remediation/First Fix
—|—|—
IBM Security Network Intrusion Prevention System | Firmware version 4.6.2| 4.6.2.0-ISS-ProvG-AllModels-System-FP0008
IBM Security Network Intrusion Prevention System | Firmware version 4.6.1| 4.6.1.0-ISS-ProvG-AllModels-System-FP0012
IBM Security Network Intrusion Prevention System | Firmware version 4.6| 4.6.0.0-ISS-ProvG-AllModels-System-FP0010
IBM Security Network Intrusion Prevention System | Firmware version 4.5| 4.5.0.0-ISS-ProvG-AllModels-System-FP0012
IBM Security Network Intrusion Prevention System | Firmware version 4.4| 4.4.0.0-ISS-ProvG-AllModels-System-FP0012
IBM Security Network Intrusion Prevention System | Firmware version 4.3| 4.3.0.0-ISS-ProvG-AllModels-System-FP0010

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

none