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AUSCERT External Security Bulletin Redistribution
ESB-2021.3040
Security Bulletin: Multiple security vulnerabilities affect
Liberty for Java for IBM Cloud
9 September 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: Liberty for Java
Publisher: IBM
Operating System: Linux variants
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Modify Arbitrary Files -- Remote with User Interaction
Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote with User Interaction
Reduced Security -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2021-2432 CVE-2021-2388 CVE-2021-2369
CVE-2021-2341
Reference: ESB-2021.2815
ESB-2021.2757
ESB-2021.2474
Original Bulletin:
https://www.ibm.com/support/pages/node/6487067
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Multiple security vulnerabilities affect Liberty for Java for IBM Cloud
Document Information
Document number : 6487067
Modified date : 07 September 2021
Product : Liberty for Java
Software version : All
Operating system(s): Linux
Summary
Multiple vulnerabilities in IBM Java SDK affect Liberty for Java for IBM Cloud
July 2021 CPU.
Vulnerability Details
CVEID: CVE-2021-2388
DESCRIPTION: An unspecified vulnerability in Java SE related to the VM
component could allow an unauthenticated attacker to take control of the
system.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
205815 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H)
CVEID: CVE-2021-2369
DESCRIPTION: An unspecified vulnerability in Java SE related to the Library
component could allow an unauthenticated attacker to cause no confidentiality
impact, low integrity impact, and no availability impact.
CVSS Base score: 4.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
205796 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N)
CVEID: CVE-2021-2432
DESCRIPTION: An unspecified vulnerability in Java SE related to the JNDI
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/
205856 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)
CVEID: CVE-2021-2341
DESCRIPTION: An unspecified vulnerability in Java SE related to the Networking
component could allow an unauthenticated attacker to obtain sensitive
information resulting in a low confidentiality impact using unknown attack
vectors.
CVSS Base score: 3.1
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
205768 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N)
Affected Products and Versions
These vulnerabilities affect all versions of Liberty for Java in IBM Cloud up
to and including v3.60.
Remediation/Fixes
To upgrade to Liberty for Java v3.61-20210826-1015 or higher, you must re-stage
or re-push your application
To find the current version of Liberty for Java in IBM Cloud being used, from
the command-line Cloud Foundry client by running the following commands:
cf ssh <appname> -c cat "staging_info.yml"
Look for the following lines:
{"detected_buildpack":"Liberty for Java(TM) (WAR, liberty-21.0.0_6,
buildpack-v3.60-20210730-0620, ibmjdk-1.8.0_sr6fp31-20210510, 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 <appname>
To re-push your application using the command-line Cloud Foundry client, use
the following command:
cf push <appname>
Workarounds and Mitigations
None
Change History
07 Sep 2021: Initial Publication
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