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
- If you are running ADI V5.0.5 or V5.1.0, skip this step. For V5.0.4, complete the following substeps.
- Stop the server. Navigate to the server directory in your Rational product installation path and run this script:
server.shutdown - Modify the healthcenter parameter set.
- Navigate to the server directory in your Rational product installation path, open the
server.startupscript 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.startupscript 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 theserver.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 ...
- Navigate to the server directory in your Rational product installation path, open the
- Start the server. Navigate to the server directory in your Rational product installation path and run this script:
server.startup
- Stop the server. Navigate to the server directory in your Rational product installation path and run this script:
- 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 -
Navigate to the server directory in your Rational product installation path, and go to jre/lib/security path.
-
Open the
java.securityfile by using your preferred text editor (e.g., Notepad for Windows or Vim Editor for Linux). -
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
- Before modification:
-
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References
*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
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Document Location
Worldwide
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Document Information
Modified date:
29 May 2019
UID
ibm10885184