Security Bulletin: Vulnerability in IBM® Java SDK affects multiple IBM Rational products based on IBM Jazz technology

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 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 April 2017.

Vulnerability Details

CVEID: CVE-2017-3511**
DESCRIPTION:** An unspecified vulnerability in Oracle Java SE related to the Java SE, Java SE Embedded, JRockit JCE component could allow an unauthenticated attacker to take control of the system.
CVSS Base Score: 7.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/124890 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H)
**** CVEID: CVE-2016-9840**
DESCRIPTION:** zlib is vulnerable to a denial of service, caused by an out-of-bounds pointer arithmetic in inftrees.c. By persuading a victim to open a specially crafted document, a remote attacker could exploit this vulnerability to cause a denial of service.
CVSS Base Score: 3.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/120508 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-9841**
DESCRIPTION:** zlib is vulnerable to a denial of service, caused by an out-of-bounds pointer arithmetic in inftrees.c. By persuading a victim to open a specially crafted document, a remote attacker could exploit this vulnerability to cause a denial of service.
CVSS Base Score: 3.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/120509 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-9842**
DESCRIPTION:** zlib is vulnerable to a denial of service, caused by an undefined left shift of negative number. By persuading a victim to open a specially crafted document, a remote attacker could exploit this vulnerability to cause a denial of service.
CVSS Base Score: 3.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/120510 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-9843**
DESCRIPTION:** zlib is vulnerable to a denial of service, caused by a big-endian out-of-bounds pointer. By persuading a victim to open a specially crafted document, a remote attacker could exploit this vulnerability to cause a denial of service.
CVSS Base Score: 3.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/120511 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)

Affected Products and Versions

Rational Collaborative Lifecycle Management 4.0 - 6.0.3

Rational Quality Manager 4.0 - 4.0.7
Rational Quality Manager 5.0 - 5.0.2
Rational Quality Manager 6.0 - 6.0.3

Rational Team Concert 4.0 - 4.0.7
Rational Team Concert 5.0 - 5.0.2
Rational Team Concert 6.0 - 6.0.3

Rational DOORS Next Generation 4.0 - 4.0.7
Rational DOORS Next Generation 5.0 - 5.0.2
Rational DOORS Next Generation 6.0 - 6.0.3

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 - 6.0.3

Rational Rhapsody Design Manager 4.0 - 4.0.7
Rational Rhapsody Design Manager 5.0 - 5.0.2
Rational Rhapsody Design Manager 6.0 - 6.0.3

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 - 6.0.3

Remediation/Fixes

IMPORTANT CONSIDERATIONS:

1. 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 your IBM Rational product, and only upgrade the JRE in the WAS server.
2. For the below remediations, if you are a WAS deployment, then WAS must also be remediated, in addition to performing your product upgrades. Follow instructions at Security Bulletin: Multiple vulnerabilities in IBM® Java SDK affects WebSphere Application Server April 2017 CPU to get the WAS remediation .
   If you are deploying the Rational products to a WAS Liberty or a Tomcat Server, you will need to follow the instructions below to upgrade the JRE, and then must also configure to complete the upgrade process:

3.1. Stop the server: Navigate to the Server directory in your Ratonal product installation path and run this script: server.shutdown

3.2. Navigate to the server directory in your Rational product installation path, open server.startup_ _script using prefered text editor (e.g., Notepad for Windows or Vim Editor for Linux) and add one more option to the healthcenter parameter set:

Search parameter -Dcom.ibm.java.diagnostics.healthcenter.agent in server.startup script to find the line containing the health center parameter.

NOTE: For some Rational Collaborative Lifecycle Management versions,_ -Dcom.ibm.java.diagnostics.healthcenter.agent_ parameter may not be found in the server.startup, in this case the update is not needed and you can start using your server. **
Windows:**
Modify the line (where HEALTHCENTER_OPTS parameter located) by adding a new healthcenter option: _
-Dsun.rmi.registry.registryFilter=javax.rmi.CORBA.Stub_

Before modification:_
set HEALTHCENTER_OPTS=-agentlib:healthcenter -Dcom.ibm.java.diagnostics.healthcenter.agent.port=1972
After modification:
set HEALTHCENTER_OPTS=-agentlib:healthcenter -Dcom.ibm.java.diagnostics.healthcenter.agent.port=1972 -Dsun.rmi.registry.registryFilter=javax.rmi.CORBA.Stub_
**
Linux:**
Modify the line (where HEALTHCENTER_OPTS parameter located) by adding a new healthcenter option: -Dsun.rmi.registry.registryFilter=javax.rmi.CORBA.Stub

Before modification:_
export HEALTHCENTER_OPTS=“-agentlib:healthcenter -Dcom.ibm.java.diagnostics.healthcenter.agent.port=1972”
After modification:
export HEALTHCENTER_OPTS=“-agentlib:healthcenter -Dcom.ibm.java.diagnostics.healthcenter.agent.port=1972 -Dsun.rmi.registry.registryFilter=javax.rmi.CORBA.Stub”_
3.3. Start the server. Navigate to the Server directory in your Rational product installation path and run this script: _server.startup. _

STEPS TO APPLY THE REMEDIATION:
_ _
1. Upgrade your products to a supported version:4.0.7,5.0.2,6.0.2, or 6.0.3
2. Apply the latest ifix for your installed version.
3. Obtain the April 2017 CPU update for the IBM_®_ Java SDK.

Based on version installed, obtain the latest ifixes (recommended), and the below indicated java from:
For the 6.0.3 releases: JRE 7.1.4.5**(<product>-JavaSE-JRE-7.1SR4FP5**)

• Rational Collaborative Lifecycle Management 6.0.3
• Rational Team Concert 6.0.3
• Rational Quality Manager 6.0.3
• Rational DOORS Next Generation 6.0.3
• Rational Software Architect Design Manager:_ _Upgrade to version 6.0.3 and install server and JRE from CLM 6.0.3
• Rational Rhapsody Design Manager:_ _Upgrade to version 6.0.3 and install server and JRE from CLM 6.0.3
• Rational Engineering Lifecycle Manager:_ _Upgrade to version 6.0.3 and install server and JRE from CLM 6.0.3

For the 6.0.2 releases: JRE 7.1.4.5**(<product>-JavaSE-JRE-7.1SR4FP5**)

• Rational Collaborative Lifecycle Management 6.0.2

• Rational Team Concert 6.0.2

• Rational Quality Manager 6.0.2

• Rational DOORS Next Generation 6.0.2

• Rational Software Architect Design Manager:_ _Upgrade to version 6.0.2 and install server and JRE from CLM 6.0.2

• Rational Rhapsody Design Manager:_ _Upgrade to version 6.0.2 and install server and JRE from CLM 6.0.2

• Rational Engineering Lifecycle Manager:_ _Upgrade to version 6.0.2 and install server and JRE from CLM 6.0.2

• For the 5.x releases: JRE 6.0.16.45**(<product>-JavaSE-JRE-6.0SR16FP45**)

• Rational Collaborative Lifecycle Management 5.0.2

• Rational Team Concert 5.0.2

• Rational Quality Manager 5.0.2

• Rational DOORS Next Generation 5.0.2

• Rational Software Architect Design Manager:_ _Upgrade to version 5.0.2 and install server and JRE from CLM 5.0.2

• Rational Rhapsody Design Manager:_ _Upgrade to version 5.0.2 and install server and JRE from CLM 5.0.2

• Rational Engineering Lifecycle Manager:_ Upgrade to version 5.0.2 and install server and JRE from CLM 5.0.2
  _
  For the 4.x releases: JRE 6.0.16.45**(<product>-JavaSE-JRE-6.0SR16FP45**)

• Rational Collaborative Lifecycle Management 4.0.7

• Rational Team Concert 4.0.7

• Rational Quality Manager 4.0.7

• Rational DOORS Next Generation/Requirements Composer 4.0.7

• Rational Software Architect Design Manager: _ _Upgrade to version 4.0.7 and install server and JRE from CLM 4.0.7

• Rational Rhapsody Design Manager: Upgrade to version 4.0.7 and install server and JRE from CLM 4.0.7

• Rational Engineering Lifecycle Manager: Upgrade to version 4.0.7 and install server and JRE from CLM 4.0.7

• 4. Upgrade your JRE following the instructions in the link below:
  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

5. Navigate to the server directory in your Rational product installation path, and go to jre/lib/security path.

6. Open java.security_ _ file using prefered text editor (e.g., Notepad for Windows or Vim Editor for Linux) and remove MD5 option from the jdk.jar.disabledAlgorithms parameter set:

Before modification:
jdk.jar.disabledAlgorithms=MD2, MD5, RSA keySize < 1024

After modification:
jdk.jar.disabledAlgorithms=MD2, RSA keySize < 1024

Workarounds and Mitigations

None