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AUSCERT External Security Bulletin Redistribution
ESB-2023.3842
Multiple Vulnerabilities in IBM Java SDK affect Liberty for
Java for IBM Cloud due to April 2023 CPU
7 July 2023
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AusCERT Security Bulletin Summary
———————————
Product: Liberty for Java for IBM Cloud
Publisher: IBM
Operating System: Linux variants
Resolution: Patch/Upgrade
CVE Names: CVE-2023-21968 CVE-2023-21967 CVE-2023-21954
CVE-2023-21939 CVE-2023-21938 CVE-2023-21937
CVE-2023-21930 CVE-2023-2597
Original Bulletin:
https://www.ibm.com/support/pages/node/7010083
Comment: CVSS (Max): 7.4 CVE-2023-21930 (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)
CVSS Source: IBM
Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
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Security Bulletin: Multiple Vulnerabilities in IBM Java SDK affect Liberty
for Java for IBM Cloud due to April 2023 CPU
Document Information
Document number : 7010083
Modified date : 06 July 2023
Product : Liberty for Java for IBM Cloud
Component : –
Software version : 4.2
Operating system(s): Linux
Security Bulletin
Summary
There are multiple vulnerabilities in the IBM SDK, Java Technology Edition that
is shipped with Liberty for Java for IBM Cloud. The CVE(s) listed in this
document might affect some configurations of Liberty for Java for IBM Cloud.
These products have addressed the applicable CVE(s). If you run your own Java
code using the IBM Java Runtime delivered with this product, you should
evaluate your code to determine whether the complete list of vulnerabilities is
applicable to your code. For a complete list of vulnerabilities, refer to the
link for “IBM Java SDK Security Bulletin” located in the References section for
more information.
Vulnerability Details
CVEID: CVE-2023-21930
DESCRIPTION: An unspecified vulnerability in Oracle Java SE, Oracle GraalVM
Enterprise Edition related to the JSSE component could allow an unauthenticated
attacker to cause high confidentiality impact and high integrity impact.
CVSS Base score: 7.4
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
253115 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)
CVEID: CVE-2023-21967
DESCRIPTION: An unspecified vulnerability in Oracle Java SE, Oracle GraalVM
Enterprise Edition related to the Hotspot component could allow a remote
attacker to cause high confidentiality impact.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
253166 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
CVEID: CVE-2023-21954
DESCRIPTION: An unspecified vulnerability in Oracle Java SE, Oracle GraalVM
Enterprise Edition related to the JSSE component could allow a remote attacker
to cause high availability impact.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
253156 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2023-21939
DESCRIPTION: An unspecified vulnerability in Oracle Java SE, Oracle GraalVM
Enterprise Edition related to the Swing component could allow a remote attacker
to cause integrity impact.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
253168 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
CVEID: CVE-2023-21968
DESCRIPTION: An unspecified vulnerability in Oracle Java SE and GraalVM
Enterprise Edition related to the Libraries component could allow an
unauthenticated attacker to cause low integrity impact.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
253083 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)
CVEID: CVE-2023-21937
DESCRIPTION: An unspecified vulnerability in Oracle Java SE, Oracle GraalVM
Enterprise Edition related to the Networking component could allow a remote
attacker to cause integrity impact.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
253167 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)
CVEID: CVE-2023-21938
DESCRIPTION: An unspecified vulnerability in Oracle Java SE, Oracle GraalVM
Enterprise Edition related to the Libraries component could allow a remote
attacker to cause integrity impact.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
253155 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)
CVEID: CVE-2023-2597
DESCRIPTION: Eclipse Openj9 is vulnerable to a buffer overflow, caused by
improper bounds checking by the getCachedUTFString() function. By using
specially crafted input, a local authenticated attacker could overflow a buffer
and execute arbitrary code on the system.
CVSS Base score: 7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
255906 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)
Affected Products and Versions
+——————-+————————+
|Affected Product(s)|Version(s) |
+——————-+————————+
|Liberty for Java |up to and including v4.1|
+——————-+————————+
Remediation/Fixes
To upgrade to Liberty for Java for IBM Cloud v4.2-20230619-0514 or higher, you
must re-stage or re-push your application
To find the current version of Liberty for Java for IBM Cloud being used, from
the command-line Cloud Foundry client by running the following commands:
cf ssh -c “cat staging_info.yml”
Look for similar lines:
{“detected_buildpack”:”Liberty for Java(TM) (WAR, liberty-xxx,
v4.2-20230619-0514, xxx, env)”,”start_command”:”.liberty/initial_startup.rb”}
To re-stage your application using the command-line Cloud Foundry client, use
the following command:
cf restage
To re-push your application using the command-line Cloud Foundry client, use
the following command:
cf push
Workarounds and Mitigations
None
IBM Java SDK Security
Acknowledgement
Change History
06 Jul 2023: Initial Publication
*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. In addition to other efforts to
address potential vulnerabilities, IBM periodically updates the record of
components contained in our product offerings. As part of that effort, if IBM
identifies previously unidentified packages in a product/service inventory, we
address relevant vulnerabilities regardless of CVE date. Inclusion of an older
CVEID does not demonstrate that the referenced product has been used by IBM
since that date, nor that IBM was aware of a vulnerability as of that date. We
are making clients aware of relevant vulnerabilities as we become aware of
them. “Affected Products and Versions” referenced in IBM Security Bulletins are
intended to be only products and versions that are supported by IBM and have
not passed their end-of-support or warranty date. Thus, failure to reference
unsupported or extended-support products and versions in this Security Bulletin
does not constitute a determination by IBM that they are unaffected by the
vulnerability. Reference to one or more unsupported versions in this Security
Bulletin shall not create an obligation for IBM to provide fixes for any
unsupported or extended-support products or versions.
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