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Security Bulletin: Multiple vulnerabilities may affect IBM® SDK, Java™ Technology Edition

Security Bulletin


Summary

Java SE issues disclosed in the Oracle July 2018 Critical Patch Update, plus six additional vulnerabilities.

Vulnerability Details

CVE IDs:  CVE-2018-2964 CVE-2018-2973 CVE-2018-2940 CVE-2018-2952 CVE-2018-1656 CVE-2018-12539 CVE-2018-1517 CVE-2016-0705 CVE-2017-3732 CVE-2017-3736

This bulletin covers all applicable Java SE CVEs published by Oracle as part of their July 2018 Critical Patch Update, plus six additional vulnerabilities. For more information please refer to Oracle's July 2018 CPU Advisory and the X-Force database entries referenced below.

CVEID:  CVE-2018-2964
DESCRIPTION:  An unspecified vulnerability related to the Java SE Deployment component could allow an unauthenticated attacker to take control of the system.
CVSS Base Score: 8.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/146827 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H)

CVEID:  CVE-2018-2973
DESCRIPTION:  An unspecified vulnerability related to the Java SE JSSE component could allow an unauthenticated attacker to cause no confidentiality impact, high integrity impact, and no availability impact.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/146835 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N)

CVEID:  CVE-2018-2940
DESCRIPTION:  An unspecified vulnerability related to the Java SE Libraries component could allow an unauthenticated attacker to obtain sensitive information resulting in a low confidentiality impact using unknown attack vectors.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/146803 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:N/A:N)

CVEID:  CVE-2018-2952
DESCRIPTION:  An unspecified vulnerability related to the Java SE Concurrency component could allow an unauthenticated attacker to cause a denial of service resulting in a low availability impact using unknown attack vectors.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/146815 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID:  CVE-2018-1656
DESCRIPTION:  The IBM Java Runtime Environment's Diagnostic Tooling Framework for Java (DTFJ) does not protect against path traversal attacks when extracting compressed dump files.
CVSS Base Score: 7.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/144882 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N)

CVEID: CVE-2018-12539
DESCRIPTION: Eclipse OpenJ9 could allow a local attacker to gain elevated privileges on the system, caused by the failure to restrict the use of Java Attach API to connect to an Eclipse OpenJ9 or IBM JVM on the same machine and use Attach API operations to only the process owner. An attacker could exploit this vulnerability to execute untrusted native code and gain elevated privileges on the system.
CVSS Base Score: 8.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/148389 for more information
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

CVEID:  CVE-2018-1517
DESCRIPTION:  A flaw in the java.math component in IBM SDK, Java Technology Edition may allow an attacker to inflict a denial-of-service attack with specially crafted String data.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/141681 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID: CVE-2016-0705
DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by a double-free error when parsing DSA private keys.
An attacker could exploit this vulnerability to corrupt memory and cause a denial of service.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111140 for more information
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2017-3732
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive information, caused by a carry propagating bug in
 the x86_64 Montgomery squaring procedure. An attacker could exploit this vulnerability to obtain information about the
private key.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/121313 for more information
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-2017-3736
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive information, caused by a carry propagation flaw i
n the x86_64 Montgomery squaring function bn_sqrx8x_internal(). An attacker with online access to an unpatched system co
uld exploit this vulnerability to obtain information about the private key.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/134397 for more information
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

Affected Products and Versions

IBM SDK, Java Technology Edition, Version 6 Service Refresh 16 Fix Pack 65 and earlier releases
IBM SDK, Java Technology Edition, Version 6R1 Service Refresh 8 Fix Pack 65 and earlier releases
IBM SDK, Java Technology Edition, Version 7 Service Refresh 10 Fix Pack 25 and earlier releases
IBM SDK, Java Technology Edition, Version 7R1 Service Refresh 4 Fix Pack 25 and earlier releases
IBM SDK, Java Technology Edition, Version 8 Service Refresh 5 Fix Pack 15 and earlier releases

For detailed information on which CVEs affect which releases, please refer to the IBM SDK, Java Technology Edition Security Vulnerabilities page

Remediation/Fixes

Fixes for applicable vulnerabilities are included in IBM SDK, Java Technology Edition, Version 6 Service Refresh 16 Fix Pack 70 and subsequent releases, where embedded with supported IBM products
Fixes for applicable vulnerabilities are included in IBM SDK, Java Technology Edition, Version 6R1 Service Refresh 8 Fix Pack 70 and subsequent releases, where embedded with supported IBM products
Fixes for applicable vulnerabilities are included in IBM SDK, Java Technology Edition, Version 7 Service Refresh 10 Fix Pack 30 and subsequent releases
Fixes for applicable vulnerabilities are included in IBM SDK, Java Technology Edition, Version 7R1 Service Refresh 4 Fix Pack 30 and subsequent releases
Fixes for applicable vulnerabilities are included in IBM SDK, Java Technology Edition, Version 8 Service Refresh 5 Fix Pack 20 and subsequent releases

IBM SDK, Java Technology Edition releases can be downloaded, subject to the terms of the developerWorks license, from the Java Developer Center.

IBM customers requiring an update for an SDK shipped with an IBM product should contact IBM support, and/or refer to the appropriate product security bulletin.

APAR numbers are as follows:

IJ08240 (CVE-2018-2964)
IJ08241 (CVE-2018-2973)
IJ08242 (CVE-2018-2940)
IJ08244 (CVE-2018-2952)
IJ08248 (CVE-2018-1656)
IJ08250 (CVE-2018-12539)
IJ08278 (CVE-2018-1517)
IJ07855 (CVE-2016-0705, CVE-2017-3732, CVE-2017-3736)

Workarounds and Mitigations

CVE-2018-12539 can be mitigated by disabling the Attach API functionality with the command line option -Dcom.ibm.tools.attach.enable=no

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Important Note

IBM strongly suggests that all System z customers be subscribed 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.

Reference

Complete CVSS v3 Guide
On-line Calculator v3

Oracle July 2018 Java SE Critical Patch Update Advisory
IBM SDK, Java Technology Edition Security Vulnerabilities

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Acknowledgement

CVE-2018-1517 was reported to IBM by Michael Weissbacher

Change History

August 16 2018: 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.

Document information

More support for: IBM Java

Software version: All Versions

Operating system(s): Platform Independent

Reference #: 0719653

Modified date: 16 August 2018