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Security Bulletin: Multiple vulnerabilities in IBM Java SDK affect Rational Developer for i, Rational Developer for AIX and Linux, Rational Developer for Power Systems Software

Security Bulletin


Summary

There are multiple vulnerabilities in IBM® SDK Java™ Technology Edition, Versions 6, 7, and 8 that are used by Rational Developer for i, Rational Developer for AIX and Linux, Rational Developer for Power Systems Software (CVE-2015-7575, CVE-2016-0466, CVE-2016-0475, CVE-2016-0448). 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

Rational Developer for i, Rational Developer for AIX and Linux, Rational Developer for Power Systems Software are affected by the following 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/UI:U/C:H/I:L/A:N)

CVEID: CVE-2016-0466
DESCRIPTION:
An unspecified vulnerability 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/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-2016-0475
DESCRIPTION:
An unspecified vulnerability 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-2016-0448
DESCRIPTION:
An unspecified vulnerability related to the JMX component could allow a remote attacker to obtain sensitive information.
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

Product Name Versions Affected
Rational Developer for Power Systems Software 8.0, 8.0.0.1, 8.0.0.2, 8.0.0.3, 8.0.3, 8.0.3.1, 8.5, 8.5.1
Rational Developer for i 9.0, 9.0.0.1, 9.0.1, 9.1, 9.1.1, 9.1.1.1, 9.5, 9.5.0.1, 9.5.0.2
Rational Developer for AIX and Linux, AIX COBOL Edition 9.0, 9.0.0.1, 9.0.1, 9.1, 9.1.1, 9.1.1.2
Rational Developer for AIX and Linux, C/C++ Edition 9.0, 9.0.0.1, 9.0.1, 9.1, 9.1.1, 9.1.1.2

Remediation/Fixes

Product VRMF Remediation/First Fix
Rational Developer for Power Systems Software 8.0 through 8.5.1
Rational Developer for i 9.0 through to 9.5
Rational Developer for AIX and Linux 9.0 through to 9.1

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.

Get Notified about Future Security Bulletins

References

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Acknowledgement

CVE-2015-7575 was reported to IBM by Karthikeyan Bhargavan at INRIA in Paris, France

Change History

23 February 2016: 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

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.


Cross reference information
Segment Product Component Platform Version Edition
Software Development Rational Developer for AIX and Linux AIX, Linux, Windows 9.0, 9.0.0.1, 9.0.1, 9.1, 9.1.1, 9.1.1.1, 9.1.1.2 AIX COBOL Edition, C/C++ Edition
Software Development Rational Developer for i Linux, Windows 9.0, 9.0.0.1, 9.0.1, 9.1, 9.1.1, 9.1.1.1, 9.5, 9.5.0.1, 9.5.0.2 RPG and COBOL Tools, Modernization Tools- Java Edition, Modernization Tools- EGL Edition
Software Development Rational Developer for Power Systems Software Windows, Linux 8.0, 8.0.0.1, 8.0.0.2, 8.0.0.3, 8.0.3, 8.0.3.1, 8.5, 8.5.1 All Editions

Document information

More support for: Rational Developer for i
General Information

Software version: 9.0, 9.0.0.1, 9.0.1, 9.1, 9.1.1, 9.1.1.1, 9.5, 9.5.0.1, 9.5.0.2

Operating system(s): Linux, Windows

Software edition: Modernization Tools- EGL Edition, Modernization Tools- Java Edition, RPG and COBOL Tools

Reference #: 1976840

Modified date: 24 February 2016