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AUSCERT External Security Bulletin Redistribution
ESB-2019.1953
Vulnerabilities in IBM Java SDK (January 2019) affecting IBM Application
Delivery Intelligence for IBM Z V5.1.0, V5.0.5 and V5.0.4
31 May 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Application Delivery Intelligence
Publisher: IBM
Operating System: Linux variants
Windows
AIX
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Increased Privileges -- Existing Account
Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-2426 CVE-2018-12547 CVE-2018-11212
CVE-2018-1890
Reference: ASB-2019.0018
ESB-2019.1937
ESB-2019.1928
ESB-2019.1884
Original Bulletin:
http://www.ibm.com/support/docview.wss?uid=ibm10885184
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Vulnerabilities in IBM Java SDK (January 2019) affecting IBM Application
Delivery Intelligence for IBM Z V5.1.0, V5.0.5 and V5.0.4
Product: IBM Application Delivery Intelligence
Software version: 5.0.4, 5.0.5, 5.1.0
Operating system(s): Linux, Windows
Reference #: 0885184
Security Bulletin
Summary
Multiple vulnerabilities are identified in IBM SDK Java Technology Edition
Version 1.7 and Version 1.8 that are used by IBM Application Delivery
Intelligence for IBM Z V5.1.0, V5.0.5, and V5.0.4 respectively. These issues
were disclosed as part of the IBM Java SDK updates in January 2019.
Vulnerability Details
CVEID: CVE-2018-1890
DESCRIPTION: IBM SDK, Java Technology Edition Version 8 on the AIX platform
uses absolute RPATHs which may facilitate code injection and privilege
elevation by local users.
CVSS Base Score: 5.6
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
152081 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L)
CVEID: CVE-2018-12547
DESCRIPTION: Eclipse OpenJ9 is vulnerable to a buffer overflow, caused by
improper bounds checking by the jio_snprintf() and jio_vsnprintf() functions.
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/
157512 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-2019-2426
DESCRIPTION: An unspecified vulnerability in Oracle Java SE related to the Java
SE Networking component could allow an unauthenticated attacker to obtain
sensitive information resulting in a low confidentiality impact using unknown
attack vectors.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
155744 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:N/A:N)
CVEID: CVE-2018-11212
DESCRIPTION: libjpeg is vulnerable to a denial of service, caused by a
divide-by-zero error in the alloc_sarray function in jmemmgr.c. By persuading a
victim to open a specially-crafted file, a remote attacker could exploit this
vulnerability to cause the application to crash.
CVSS Base Score: 3.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
143429 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
IBM Application Delivery Intelligence for IBM Z V5.1.0
IBM Application Delivery Intelligence for IBM Z V5.0.5
IBM Application Delivery Intelligence for IBM Z V5.0.4
Remediation/Fixes
Obtain the latest Java JRE CPU update for the IBM Java SDK by using the
following information.
ADI 5.1.0, Java 1.8
ADI 5.0.5, Java 1.8
ADI 5.0.4, Java 1.7
1. If you are running ADI V5.0.5 or V5.1.0, skip this step. For V5.0.4,
complete the following substeps.
1. Stop the server . Navigate to the server directory in your Rational
product installation path and run this script: server.shutdown
2. Modify the healthcenter parameter set.
Navigate to the server directoryin your Rational product
installation path, open the server.startup script by using your
preferred text editor (e.g., Notepad for Windows or Vim Editor for
Linux).
Search parameter -Dcom.ibm.java.diagnostics.healthcenter.agent in
the server.startup script to find the line that contains the
healthcenter 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:
Comment out the line (where the HEALTHCENTER_OPTS parameter is
located) by inserting "rem " at the beginning of the line:
Before modification:
set HEALTHCENTER_OPTS=-agentlib:healthcenter ...
After modification:
rem set HEALTHCENTER_OPTS=-agentlib:healthcenter ...
Linux:
Comment out the line (where the HEALTHCENTER_OPTS parameter is
located) by inserting "# " at the beginning of the line:
Before modification:
export HEALTHCENTER_OPTS="-agentlib:healthcenter ...
After modification:
# export HEALTHCENTER_OPTS="-agentlib:healthcenter ...
3. Start the server . Navigate to the server directory in your Rational
product installation path and run this script: server.startup
2. Upgrade your JRE by 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
3. Navigate to the server directory in your Rational product installation
path, and go to jre/lib/security path.
1. Open the java.security file by using your preferred text editor (e.g.,
Notepad for Windows or Vim Editor for Linux).
2. Remove the 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
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