Security Bulletin: Multiple vulnerabilities in IBM® Java SDK affects multiple IBM Rational products based on IBM Jazz technology (CVE-2015-7575, CVE-2016-0483, etc.)

Summary

There are multiple vulnerabilities in IBM® SDK Java Technology Edition, Version 1.6 and 1.7 that are used by IBM Jazz Team Server affecting the following IBM Jazz Team Server based Applications: Collaborative Lifecycle Management (CLM), Rational Requirements Composer (RRC), Rational DOORS Next Generation (RDNG), Rational Engineering Lifecycle Manager (RELM), Rational Team Concert (RTC), Rational Quality Manager (RQM), Rational Rhapsody Design Manager (Rhapsody DM), and Rational Software Architect (RSA DM). These issues were disclosed as part of the IBM Java SDK updates in January 2016 and October 2015, and includes the vulnerability commonly referred to as “SLOTH”.

Vulnerability Details

IBM Jazz Team Server and the CLM applications (RRC, RTC, RQM, RDNG), RELM, Rhapsody DM, and RSA DM applications are affected by the following vulnerabilities disclosed in and corrected by the IBM® Java SDK updates in January 2016 and October 2015:

Jan 2016 vulnerabilities: 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. This vulnerability is commonly referred to as “SLOTH”.
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-2016-0483**
DESCRIPTION:** An unspecified vulnerability in Oracle Java SE Java SE Embedded and Jrockit related to the AWT component has complete confidentiality impact, complete integrity impact, and complete availability impact.
CVSS Base Score: 10
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/109945 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:C/A:C)

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-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)

Oct 2015 vulnerabilities: CVEID: CVE-2015-4872**
DESCRIPTION:** An unspecified vulnerability in Oracle Java SE and JRockit related to the Security component has no confidentiality impact, partial integrity impact, and no availability impact.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107361 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:P/A:N)

CVEID: CVE-2015-4893**
DESCRIPTION:** An unspecified vulnerability in Oracle Java SE and JRockit related to the JAXP component could allow a remote attacker to cause a denial of service.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107359 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVEID: CVE-2015-4803**
DESCRIPTION:** An unspecified vulnerability in Oracle Java SE and JRockit related to the JAXP component could allow a remote attacker to cause a denial of service.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107358 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVEID: CVE-2015-5006**
DESCRIPTION:** IBM Java Security Components could allow an attacker with physical access to the system to obtain sensitive information from the Kerberos Credential Cache.
CVSS Base Score: 4.6
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/106309 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)

Affected Products and Versions

Rational Collaborative Lifecycle Management 3.0.1 - 6.0.1

Rational Quality Manager 2.0 - 2.0.1
Rational Quality Manager 3.0 - 3.0.1.6
Rational Quality Manager 4.0 - 4.0.7
Rational Quality Manager 5.0 - 5.0.2
Rational Quality Manager 6.0 - 6.0.1

Rational Team Concert 2.0 - 2.0.0.2
Rational Team Concert 3.0 - 3.0.6
Rational Team Concert 4.0 - 4.0.7
Rational Team Concert 5.0 - 5.0.2
Rational Team Concert 6.0 - 6.0.1

Rational Requirements Composer 2.0 - 2.0.0.4
Rational Requirements Composer 3.0 - 3.0.1.6
Rational Requirements Composer 4.0 - 4.0.7

Rational DOORS Next Generation 4.0 - 4.0.7
Rational DOORS Next Generation 5.0 - 5.0.2
Rational DOORS Next Generation 6.0 - 6.0.1

Rational Engineering Lifecycle Manager 1.0- 1.0.0.1
Rational Engineering Lifecycle Manager 4.0.3 - 4.0.7
Rational Engineering Lifecycle Manager 5.0 - 5.0.2
Rational Engineering Lifecycle Manager 6.0 - 6.0.1

Rational Rhapsody Design Manager 3.0 - 3.0.1
Rational Rhapsody Design Manager 4.0 - 4.0.7
Rational Rhapsody Design Manager 5.0 - 5.0.2
Rational Rhapsody Design Manager 6.0 - 6.0.1

Rational Software Architect Design Manager 3.0 - 3.0.1
Rational Software Architect Design Manager 4.0 - 4.0.7
Rational Software Architect Design Manager 5.0 - 5.0.2
Rational Software Architect Design Manager 6.0 - 6.0.1

Remediation/Fixes

If your product is deployed on WebSphere Application Server (WAS) and your deployment does not use an Eclipse based client nor the RM Browser plugin, then it is sufficient to continue using the existing version of the your Rational product, and only upgrade the JRE in the WAS server according to these instructions:
_ _Security Bulletin: Multiple vulnerabilities in IBM® Java SDK affect WebSphere Application Server January 2016 CPU

The January 2016 update contains all of the corrections from the October 2015 update. The October update is listed here for convenience, but upgrade to the January 2016 update to get all the corrections.
_ _Security Bulletin: Multiple vulnerabilities in IBM® Java SDK affect WebSphere Application Server October 2015 CPU

Otherwise:
Note: for any of the below remediations, if you are a WAS deployment, then WAS must also be upgraded, in addition to performing your product upgrades.
Upgrade your products to version 3.0.1.6 or 4.0.7 or5.0.2or6.0.1, apply the latest ifix, and then perform the following upgrades. Request the January 2016 CPU update for the IBM_®_ Java SDK:

How to update the IBM SDK for Java of IBM Rational products based on version 3.0.1.6 or later of IBM’s Jazz technology

• • For the 3.x releases of Rational Software Architect Design Manager and Rhapsody Design Manager, if you cannot upgrade to 4.0.7 or 5.0 or 6.0, contact IBM Support for guidance.
• For the 2.x releases, contact IBM Support for additional details on the fix.

Workarounds and Mitigations

For CVE-2015-7575:

Users of Java 7 and later 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 modifications, so upgrading the JDK is the only solution.