Security Bulletin: Multiple vulnerabilities in IBM® SDK, Java™ Technology Edition affect IBM Operational Decision Manager, WebSphere ILOG JRules and WebSphere Business Events:

Summary

There are multiple vulnerabilities in IBM® SDK Java™ Technology Edition, Version 6,7 and 8 that is used by IBM Operational Decision Manager (ODM), IBM ILOG JRules and IBM WebSphere Business Events (WBE). 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-2015-8472**
DESCRIPTION:** libpng is vulnerable to a buffer overflow, caused by improper bounds checking by the png_get_PLTE() and png_set_PLTE() functions. By persuading a victim to open a specially crafted PNG image, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 6.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/109392 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L)

CVEID: CVE-2016-0402**
DESCRIPTION:** An unspecified vulnerability in Oracle Java SE and Java SE Embedded related to the Networking 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/109947 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:P/A:N)

CVEID: CVE-2015-7575**
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-2016-0448**
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)

CVEID: CVE-2015-5041**
DESCRIPTION:** A flaw in the IBM J9 JVM allows code to invoke non-public interface methods under these circumstances. Untrusted code could potentially exploit this. This could lead to sensitive data being exposed to an attacker, or the attacker being able to inject bad data.
CVSS Base Score: 4.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/106719 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N)

CVEID: CVE-2015-7981**
DESCRIPTION:** libpng could allow a remote attacker to obtain sensitive information, caused by an out-of-bounds read in the png_convert_to_rfc1123 function. An attacker could exploit this vulnerability to obtain sensitive information.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107740 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID: CVE-2015-8540**
DESCRIPTION:** libpng is vulnerable to a buffer overflow, caused by a read underflow in png_check_keyword in pngwutil.c. By sending an overly long argument, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 9.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/109219 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

CVEID: CVE-2015-8126**
DESCRIPTION:** libpng is vulnerable to a buffer overflow, caused by improper bounds checking by the png_set_PLTE() and png_get_PLTE() functions. By persuading a victim to open a specially-crafted PNG file, a remote attacker could overflow a buffer and execute arbitrary code on the system.
CVSS Base Score: 7.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/108010 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)

Affected Products and Versions

• IBM WebSphere Business Events 7.0
• IBM WebSphere ILOG JRules v7.1
• IBM WebSphere Operational Decision Management v7.5
• IBM Operational Decision Manager v8.0
• IBM Operational Decision Manager v8.5
• IBM Operational Decision Manager v8.6
• IBM Operational Decision Manager v8.7
• IBM Operational Decision Manager v8.8

Remediation/Fixes

IBM WebSphere ILOG JRules V7.1:
Interim fix 48 for APAR RS02306 is available from IBM Fix Central: 7.1.1.5-WS-BRMS_JDK-WIN-IF053

IBM WebSphere Business Event 7.0:
Interim fix RS02306 for APAR RS02306 is available from IBM Fix Central: 7.0.1.1-WS-BE-<OS>-RS02306

IBM WebSphere Operational Decision Management v7.5:
Interim fix 50 for APAR RS02306 is available from IBM Fix Central: **7.5.0.4-WS-ODM_JDK-<OS>-**IF050

IBM Operational Decision Manager v8.0:

Interim fix 50 for APAR RS02306 is available from IBM Fix Central: **7.5.0.4-WS-ODM_JDK-<OS>-**IF050

IBM Operational Decision Manager v8.5:

Interim fix 57 for APAR RS02306 is available from IBM Fix Central: **8.5.0.0-WS-ODM_JDK-<OS>-**IF057

IBM Operational Decision Manager v8.6:

Interim fix 57 for APAR RS02306 is available from IBM Fix Central: **8.5.0.0-WS-ODM_JDK-<OS>-**IF057

IBM Operational Decision Manager v8.7:

Interim fix 57 for APAR RS02306 is available from IBM Fix Central: **8.5.0.0-WS-ODM_JDK-<OS>-**IF057

IBM Operational Decision Manager v8.8:

Interim fix 57 for APAR RS02306 is available from IBM Fix Central: **8.5.0.0-WS-ODM_JDK-<OS>-**IF057
Interim fix 6 for APAR RS02306 is available from IBM Fix Central:
**8.8.0.0-WS-ODM_JDK-<OS>-**IF006 (For Decision Server Insight component)

**Important note:**IBM strongly suggests that all System z customers subscribe to the System z Security Portal to receive the latest critical System z security and integrity service. If you are not subscribed, see the instructions on the System z Security web site. Security and integrity APARs and associated fixes will be posted to this portal. IBM suggests reviewing the CVSS scores and applying all security or integrity fixes as soon as possible to minimize any potential risk.

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.