Security Bulletin
Summary
The RC4 “Bar Mitzvah” Attack for SSL/TLS affects the IBM FlashSystem V840.
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 FlashSystem V840 including machine type and models (MTMs) for all available code levels. MTMs affected include 9846-AE1, 9848-AE1,9846-AC0, 9846-AC1, 9848-AC0, and 9848-AC1.
Remediation/Fixes
|
Product | VRMF | APAR | Remediation/First Fix |
| FlashSystem V840 MTMs:
9846-AE1, 9848-AE1, 9846-AC0, 9846-AC1, 9848-AC0, 9848-AC1 | A code fix is now available. The VRMF of this code level is 1.1.3.8 (or later) for the storage enclosure nodes (-AEx) and 7.4.0.4 for the control nodes (-ACx) | None | This vulnerability has been remediated in firmware versions 1.1.3.8 (-AEx) and 7.4.0.4 (-ACx)
|
You should verify applying this fix does not cause any compatibility issues. The fix disables any use of the RC4 stream cipher when interfacing to the IBM FlashSystem V840 -- and does not allow it to be re-enabled. 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.
For firmware versions released earlier than 1.1.3.8 for the storage enclosure nodes and 7.4.0.4 for the control nodes, IBM recommends upgrading to a fixed, supported version/release/platform of the product.
Link to FlashSystem V840 fixes
Workarounds and Mitigations
Although IBM recommends that you install a level of code with a fix for this vulnerability, you can mitigate, although not eliminate, your risk until you have done so by ensuring that all users who have access to the system are authenticated by another security system such as a firewall.
Get Notified about Future Security Bulletins
References
Acknowledgement
None
Change History
17 April 2015: Original Version Published
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Was this topic helpful?
Document Information
Modified date:
17 June 2018
UID
ssg1S1005218