Security Bulletin
Summary
Cross-protocol attack on TLS using SSLv2
Vulnerability Details
OpenSSL is used in IBM Storwize V7000 Unified for providing communication security by encrypting data being transmitted.
CVEID: CVE-2016-0800
DESCRIPTION: OpenSSL could allow a remote attacker to bypass security restrictions. By using a server that supports SSLv2 and EXPORT cipher suites as a Bleichenbacher RSA padding oracle, an attacker could exploit this vulnerability to decrypt TLS sessions between clients and non-vulnerable servers. This vulnerability is also known as the DROWN attack.
CVSS Base Score: 7.4
CVSSTemporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111139 for more information
CVSSEnvironmental Score*: Undefined
CVSSVector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:UC/CI:H/II:H/AI:N)
Affected Products and Versions
IBM Storwize V7000 Unified
The product is affected when running code releases 1.5.0.0 to 1.5.2.3 and 1.6.0.0 to 1.6.0.1
Remediation/Fixes
A fix for these issues is in version 1.5.2.4 and 1.6.1.0 of IBM Storwize V7000 Unified. Customers running an affected version of IBM Storwize V7000 Unified should upgrade to 1.5.2.4 or 1.6.1.0 or a later version, so that the fix gets applied.
Latest Storwize V7000 Unified Software
Please contact IBM support for assistance in upgrading your system.
Workarounds and Mitigations
Workaround(s): None
Mitigation(s): SSLv2 is not offered in IBM Storwize V7000 Unified. Hence possibility of V7000 Unified being affected by this security issue is only if private keys of V7000 Unified are shared on any other server that allows SSLv2 connections. Although IBM recommends that you install a level of IBM Storwize V7000 Unified code with a fix, you can avoid this vulnerability by not sharing private keys of V7000 Unified on any other server that allows SSLv2 connections.
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References
Change History
16 March 2016 : First draft
*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.
Internal Use Only
CQ S1061603 - [PSIRT 4895] IBM product record 72428 for SONAS and 72470 for IFS - EXPEDITED DROWN - Cross-protocol attack on TLS using SSLv2 - CVE-2016-0800
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Document Information
Modified date:
17 June 2018
UID
ssg1S1005717