Security Bulletin: Multiple vulnerabilities in IBM Java SDK affect IBM SmartCloud Entry (CVE-2016-0475 CVE-2016-0448 CVE-2015-7575 CVE-2016-0466)

Summary

There are multiple vulnerabilities in IBM® SDK Java™ Technology Edition, Version 6.0.16.15 and Version 7.0.9.20 that is used by IBM SmartCloud Entry. These issues were disclosed as part of the IBM Java SDK updates in January 2016 and includes the vulnerability commonly referred to as “SLOTH”.

Vulnerability Details

CVEID: CVE-2016-0475**
DESCRIPTION:** An unspecified vulnerability in Oracle Java SE Java SE Embedded and Jrockit related to the Libraries component has partial confidentiality impact, partial integrity impact, and no availability impact.
CVSS Base Score: 5.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/109946 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:N)

CVEID: CVE-2016-0466**
DESCRIPTION:** An unspecified vulnerability in Oracle Java SE Java SE Embedded and Jrockit related to the JAXP component could allow a remote attacker to cause a denial of service resulting in a partial availability impact using unknown attack vectors.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/109948 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVEID: CVE-2015-7575**
DESCRIPTION:** The TLS protocol could allow weaker than expected security caused by a collision attack when using the MD5 hash function for signing a ServerKeyExchange message during a TLS handshake. An attacker could exploit this vulnerability using man-in-the-middle techniques to impersonate a TLS server and obtain credentials.
CVSS Base Score: 7.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/109415 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N)

CVEID: CVE-2016-0448**
DESCRIPTION:** An unspecified vulnerability in Oracle Java SE and Java SE Embedded related to the JMX component could allow a remote attacker to obtain sensitive information resulting in a partial confidentiality impact using unknown attack vectors.
CVSS Base Score: 4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/109949 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:S/C:P/I:N/A:N)

Affected Products and Versions

IBM SmartCloud Entry 2.3.0 through 2.3.0.3 JRE Update 4
IBM SmartCloud Entry 2.4.0 through 2.4.0.5 JRE Update 4
IBM SmartCloud Entry 3.1.0 through 3.1.0.4 Appliance fix pack 18
IBM SmartCloud Entry 3.2.0 through 3.2.0.4 Appliance fix pack 18

Remediation/Fixes

Product

| VRMF| APAR| Remediation/First Fix
—|—|—|—
IBM SmartCloud Entry| 2.3| None| IBM SmartCloud Entry 2.3.0.3 JRE Update 5 for Windows:
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~Other%2Bsoftware&product=ibm/Other+software/IBM+SmartCloud+Entry&release=2.3.0.3&platform=All&function=fixId&fixids=+2.3.0.3-IBM-SCE-JRE-IF005_Windows+&includeSupersedes=0
IBM SmartCloud Entry| 2.3| None| IBM SmartCloud Entry 2.3.0.3 JRE Update 5 for Linux:
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~Other%2Bsoftware&product=ibm/Other+software/IBM+SmartCloud+Entry&release=2.3.0.3&platform=All&function=fixId&fixids=+2.3.0.3-IBM-SCE-JRE-IF005_Linux+&includeSupersedes=0
IBM SmartCloud Entry| 2.3| None| IBM SmartCloud Entry 2.3.0.3 JRE Update 5 for AIX:
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~Other%2Bsoftware&product=ibm/Other+software/IBM+SmartCloud+Entry&release=2.3.0.3&platform=All&function=fixId&fixids=+2.3.0.3-IBM-SCE-JRE-IF005_AIX+&includeSupersedes=0
IBM SmartCloud Entry| 2.4| None| IBM SmartCloud Entry 2.4.0.5 JRE Update 5 for Windows:
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~Other%2Bsoftware&product=ibm/Other+software/IBM+SmartCloud+Entry&release=2.4.0.5&platform=All&function=fixId&fixids=+2.4.0.5-IBM-SCE-JRE-IF005_Windows+&includeSupersedes=0
IBM SmartCloud Entry| 2.4| None| IBM SmartCloud Entry 2.4.0.5 JRE Update 5 for Linux:
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~Other%2Bsoftware&product=ibm/Other+software/IBM+SmartCloud+Entry&release=2.4.0.5&platform=All&function=fixId&fixids=+2.4.0.5-IBM-SCE-JRE-IF005_Linux+&includeSupersedes=0
IBM SmartCloud Entry| 2.4| None| IBM SmartCloud Entry 2.4.0.5 JRE Update 5 for AIX:
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~Other%2Bsoftware&product=ibm/Other+software/IBM+SmartCloud+Entry&release=2.4.0.5&platform=All&function=fixId&fixids=+2.4.0.5-IBM-SCE-JRE-IF005_AIX+&includeSupersedes=0
IBM SmartCloud Entry| 3.1| None| IBM SmartCloud Entry 3.1.0 Appliance fix pack 18:
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~Other%2Bsoftware&product=ibm/Other+software/IBM+SmartCloud+Entry&release=All&platform=All&function=fixId&fixids=+3.1.0.4-IBM-SCE_APPL-FP19+&includeSupersedes=0
IBM SmartCloud Entry| 3.2| None| IBM SmartCloud Entry 3.2.0 Appliance fix pack 18:
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~Other%2Bsoftware&product=ibm/Other+software/IBM+SmartCloud+Entry&release=All&platform=All&function=fixId&fixids=+3.2.0.4-IBM-SCE_APPL-FP19+&includeSupersedes=0

Workarounds and Mitigations

For CVE-2015-7575:

Users of Java 7 can address the issue by updating the /jre/lib/security/java.security file as follows(both steps are required):

• Add MD5 to the jdk.certpath.disabledAlgorithms property -

e.g. jdk.certpath.disabledAlgorithms=MD2, RSA keySize < 1024, MD5

• Add MD5withRSA to the jdk.tls.disabledAlgorithms property -

e.g. jdk.tls.disabledAlgorithms=SSLv3, RC4, DH keySize < 768, MD5withRSA

Java 6 requires code changes in the JSSE component in addition to the java.security file modification, so upgrading the JRE is the only solution.