VMware recently confirmed vulnerabilities in some VMware Tanzu developer tools. The Spring4Shell vulnerabilities were classified as critical. In addition to a workaround, the first updates are now available. Spring4Shell is a critical remote code execution vulnerability and is present in several VMware cloud computing and virtualization products. VMware products affected by Spring4Shell include the VMware Tanzu Application Service and Spring Boot.
A list of VMware products is available on the: Business support website available and added at the end of this post. In cases where no fix is available, VMware has released a workaround to resolve the issue. VMware recommends that companies using the affected solutions act now, as Spring4Shell is an actively exploited vulnerability.
Spring4Shell, officially listed as CVE-2022-22965, is a vulnerability in the Spring Core Java Framework that can be exploited without authentication and has a severity rating of 9.8 out of 10. This means that any malicious actor with access to vulnerable applications could use arbitrary commands and take full control of a target system.
Due to the widespread use of the Spring Framework for developing Java applications, security analysts are already concerned about large-scale attacks that will exploit the Spring4Shell vulnerability. To make matters worse, a working proof-of-concept (PoC) exploit was released on GitHub before a security update was available. This, of course, increases the chances of malicious exploitation.
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