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ibmIBMB0322560C1846B605A089B18FF01990EB98EE066C468D4AE47B259A4253CCE00
HistoryJun 15, 2018 - 7:02 a.m.

Security Bulletin: Vulnerability in RC4 stream cipher affects WebSphere DataPower XC10 Appliance V2.1 (CVE-2015-2808)

2018-06-1507:02:58
www.ibm.com
4

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

Summary

The RC4 “Bar Mitzvah” Attack for SSL/TLS affects WebSphere DataPower XC10 Appliance Version 2.1. WebSphere DataPower XC10 Appliance Version 2.5 is not affected.

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

WebSphere DataPower XC10 Appliance V2.1

Remediation/Fixes

The only remediation is to apply the following fixes:

Product VRMF APAR Remediation/First Fix

WebSphere DataPower XC10 Appliance| 2.1|
IT08240| http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~WebSphere&product=ibm/WebSphere/WebSphere+DataPower+XC10+Appliance&release=2.1.0.3&platform=All&function=all

Verify that 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

For WebSphere DataPower XC10 Appliance Version 2.1 will need to apply the appropriate fix. This will disable the RC4 algorithm used on the appliance.

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

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