Security Bulletin: Multiple vulnerabilities in IBM Java SDK affect IBM Fabric Manager (IFM)

Summary

There are multiple vulnerabilities in IBM® SDK Java™ Technology Edition, Version 7 that is used by IBM Fabric Manager (IFM). These issues were disclosed as part of the IBM Java SDK updates in January 2016 and includes the vulnerability commonlyreferred to as “SLOTH”.

Vulnerability Details

Summary

There are multiple vulnerabilities in IBM® SDK Java™ Technology Edition, Version 7 that is used by IBM Fabric Manager (IFM). 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

CVE-ID: 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 <http://exchange.xforce.ibmcloud.com/vulnerabilities/109415&gt; for 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)

CVE-ID: CVE-2016-0494

Description: An unspecified vulnerability in Oracle Java SE and Java SE Embedded related to the 2D component has complete confidentiality impact, complete integrity impact, and complete availability impact.

CVSS Base Score: 10
CVSS Temporal Score: See <http://exchange.xforce.ibmcloud.com/vulnerabilities/109944&gt; for current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:C/A:C)

CVE-ID: 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 <http://exchange.xforce.ibmcloud.com/vulnerabilities/109945&gt; for current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:C/A:C)

CVE-ID: 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 <http://exchange.xforce.ibmcloud.com/vulnerabilities/109392&gt; for 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)

CVE-ID: 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 <http://exchange.xforce.ibmcloud.com/vulnerabilities/109946&gt; for current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:N)

CVE-ID: 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 <http://exchange.xforce.ibmcloud.com/vulnerabilities/109948&gt; for current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVE-ID: 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 <http://exchange.xforce.ibmcloud.com/vulnerabilities/109947&gt; for current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:P/A:N)

CVE-ID: 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 <http://exchange.xforce.ibmcloud.com/vulnerabilities/109949&gt; for current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:S/C:P/I:N/A:N)

CVE-ID: 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 <http://exchange.xforce.ibmcloud.com/vulnerabilities/106719&gt; for 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)

CVE-ID: 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 <http://exchange.xforce.ibmcloud.com/vulnerabilities/107740&gt; for 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)

CVE-ID: 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 <http://exchange.xforce.ibmcloud.com/vulnerabilities/109219&gt; for 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)

CVE-ID: 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 <http://exchange.xforce.ibmcloud.com/vulnerabilities/108010&gt; for 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

Remediation/Fixes

Firmware fix versions are available on Fix Central: <http://www.ibm.com/support/fixcentral/&gt;

You should verify applying this fix does not cause any compatibility issues.

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.

References

• Complete CVSS V2 Guide
• On-line Calculator V2
• Complete CVSS V3 Guide
• On-line Calculator V3
• IBM Java SDK Security Bulletin

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
17 May 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.