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CloudStack Advisory on Spring4Shell (CVE-2022-22965 and CVE-2022-22963)

Ivet Petrova

At the beginning of April 2022, vulnerabilities in the Spring Framework for Java were publicly revealed. Many companies noticed active exploitation of the Spring4Shell vulnerability assigned as CVE-2022-22965. This vulnerability allows hackers to execute the Mirai botnet malware. The exploit allows threat actors to download the Mirai sample to the /tmp folder and execute them after changing its execute permission using chmod.

Currently, there are two vulnerabilities that allow malicious actors to achieve remote code execution (RCE) for Spring Framework - CVE-2022-22965, CVE-2022-22963.

The origin appears to be tracked to VMware products and spring-framework has published new releases v5.3.18 and v5.2.20 as mitigation.

CloudStack is not affected by Spring4Shell RCE and these CVEs because it isn't deployed as a WAR package and doesn't use Tomcat as the servlet container (it uses embedded Jetty and is deployed as an uber-jar). Further, it doesn't use spring-webmvc or spring-webflux dependencies.

As part of the Apache CloudStack project's routine maintenance and release efforts, a pull request towards the next 4.17 LTS release ( milestone) that upgrades the spring-framework dependency to the latest v5.3.18 has been merged: