The mitigation based on disabling message lookup functionality — through enabling the system property log4j2. Customers should still apply the latest security updates or apply other documented mitigation steps such as the removal of the JndiLookup. Microsoft recommends that all Customers upgrade to December release which has updated the Log4J library to 2.
Azure Arc-enabled data services us Elasticsearch version 7. However, your applications may use Log4J and be susceptible to these vulnerabilities. If you are not able to re-package your application with a newer version of Log4j and you are using Log4j versions 2. Note that this command will also restart your App Service hosted application. In our investigation so far, we have not found any evidence that these services are vulnerable however customer applications running behind these services might be vulnerable to this exploit.
We highly recommend customers to follow mitigations and workarounds mentioned in this blog to protect their applications.
Additional guidance for Azure WAF is located here. Your instance may be vulnerable if you have installed an affected version of Log4j or have installed services that transitively depend on an affected version. For more information on checking for vulnerable Log4j 2 instances installed, please see the following Microsoft Document: Verify the version of Log4j on your cluster. Customers are recommended to apply the latest Log4j security updates and re-deploy applications.
If you are not able to and you are using Log4j versions 2. Note that these application settings will restart your Function apps, and it will no longer use warm workers which will impact future cold-start performance.
All Azure HDInsight 5. Any HDI 4. For new clusters created using HDI 4. Jobs should only be executed after the patch has been applied and the impacted nodes have been rebooted to ensure that the vulnerability has been fixed. The patch should be run on each new cluster as a persisted script action until a new HDInsight image is available that incorporates the patch.
Applications deployed to Azure Spring Cloud may use Log4j and be susceptible to this vulnerability. Log4j usage may originate from:. Spring Boot applications are only affected if they have switched the default logging framework to Log4j 2. The log4j-to-slf4j and log4j-api jar files that are included in spring-boot-starter-logging cannot be exploited on their own. Only applications using log4j-core are vulnerable.
If your application is impacted and you can redeploy the application, we recommend that you upgrade your application with the latest security updates for Log4j, and redeploy to Azure Spring Cloud — see more details at Log4j 2 vulnerability and Spring Boot. If you are not able to re-deploy, you may mitigate impacted applications that are using Log4j 2.
You can set the system property or environment variable using:. Upon uninstalling this service pack, the Backup Exec CD may be requested. When you view the file information, it is converted to local time.
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