Security Bulletin: Multiple security vulnerabilities affect Liberty for Java for IBM Cloud

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)

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™ (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