VMware has warned its customers about a critical vulnerability present across several of its products, including Workspace One Access and Identity Manager, that could allow cyber criminals to take control of vulnerable machines.

The command injection flaw, tracked as CVE-2020-4006 and rated 9.1 on the CVSS threat severity scale, can be exploited in a host of VMware products, the company has warned. There’s currently no patch available, although the firm has issued a workaround that can be applied in some instances. There’s also no mention as to whether the flaw is being actively exploited in the wild or not.

Hackers armed with network access to the administrative configurator on port 8443 and a valid password to the admin account can exploit the flaw to execute commands with unrestricted privileges on the underlying operating system (OS). 

The affected services include VMware Workspace One Access, Workspace One Access Connector, Identity Manager, Identity Manager Connector, Cloud Foundation and vRealize Suite Lifecycle Manager. 

The vulnerability can be exploited in some products hosted on Linux but not on Windows, and either operating system for other products. The full details on which software and OS configurations are affected are outlined on VMware’s security advisory.

Until a patch is released, VMware has outlined a workaround that can be applied to some product lines but not all. Customers using Workspace One Access, VMware Identity Manager, and VMware Identity Manager Connector can follow the detailed steps outlined here, relevant to the configurator hosted on port 8443. This involves running a set of commands for all affected products.  

The workaround isn’t compatible with other products beyond those three that may be affected, and customers will have to keep their eyes peeled for any news of a patch as and when one is released. 

News of this command injection vulnerability has arrived only days after VMware confirmed two critical flaws in its ESXi, Workstation, Fusion and Cloud Foundation products.