The maintainers of Spring Framework have released an emergency patch to address a newly disclosed remote code execution flaw that, if successfully exploited, could allow an unauthenticated attacker to take control of a targeted system.
The Spring Framework is a Java framework that offers infrastructure support to develop web applications.
The vulnerability impacts Spring MVC [model–view–controller] and Spring WebFlux applications running on [Java Development Kit] 9+. The specific exploit requires the application to run on Tomcat as a WAR deployment. If the application is deployed as a Spring Boot executable jar, i.e., the default, it is not vulnerable to the exploit. However, the nature of the vulnerability is more general, and there may be other ways to exploit it.
Tracked as CVE-2022-22965, the high-severity flaw impacts Spring Framework versions 5.3.0 to 5.3.17, 5.2.0 to 5.2.19, and other older, unsupported versions. Users are recommended to upgrade to versions 5.3.18 or later and 5.2.20 or later.
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