lacework-global-585
Ensure that 'Java version' is the latest, if used to run the Web App (Manual)
Profile Applicability
• Level 1
Description
Java periodically releases newer versions for Java software either due to security flaws or to include additional capabilities. Use the latest Java version for web apps to take advantage of security fixes, if any, and/or new functionalities of the newer version.
Rationale
Newer versions may contain security enhancements and additional functionality. Using the latest software version is recommended in order to take advantage of enhancements and new capabilities. With each software installation, organizations need to determine if a given update meets their requirements. They must also verify the compatibility and support provided for any additional software against the update revision that is selected.
Impact
If your app is written using version-dependent features or libraries, they may not be available on the latest version. If you wish to upgrade, research the impact thoroughly. Upgrading may have unforeseen consequences that could result in downtime.
Audit
From Azure Portal
- Login to Azure Portal using https://portal.azure.com
- Go to
App Services
- Click on each App
- Under
Settings
section, click onConfiguration
- Click on the
General settings
pane and ensure that for aStack
ofJava
theMajor Version
andMinor Version
reflect the latest stable and supported release, and that theJava web server version
is set to theauto-update
option.
NOTE: No action is required if Java version
is set to Off
, as Java is not used by your web app.
From Azure CLI
To check Java version for an existing app, run the following command,
az webapp config show --resource-group <RESOURCE_GROUP_NAME> --name <APP_NAME> --query javaVersion
The output should return the latest available version of Java (if java is being used for the web app in question).
Remediation
From Azure Portal
- Login to Azure Portal using https://portal.azure.com.
- Go to App Services.
- Click each App.
- Under Settings section, click Configuration.
- Click in the General settings pane and ensure that for a Stack of Java the Major Version and Minor Version reflect the latest stable and supported release, and set the Java web server version to the auto-update option.
NOTE: You do not need to take any action if Java version is Off, as Java is not used by your web app.
From Azure CLI
To see the list of supported runtimes:
az webapp list-runtimes | grep java
To set latest Java version for an existing app, run the following command:
az webapp config set --resource-group <resource_group_name> --name <app_name> --java-version <JAVA_VERSION> --java-container <JAVA_CONTAINER> --java-container-version <JAVA_CONTAINER_VERSION>
References
https://docs.microsoft.com/en-us/azure/app-service/web-sites-configure#general-settings
https://docs.microsoft.com/en-us/security/benchmark/azure/security-controls-v3-posture-vulnerability-management#pv-3-establish-secure-configurations-for-compute-resources
https://docs.microsoft.com/en-us/security/benchmark/azure/security-controls-v3-posture-vulnerability-management#pv-3-establish-secure-configurations-for-compute-resources
https://www.oracle.com/java/technologies/downloads/#java11