CVE-2020-3956

VMware Cloud Director 10.0.x before 10.0.0.2, 9.7.0.x before 9.7.0.5, 9.5.0.x before 9.5.0.6, and 9.1.0.x before 9.1.0.4 do not properly handle input leading to a code injection vulnerability. An authenticated actor may be able to send malicious traffic to VMware Cloud Director which may lead to arbitrary remote code execution. This vulnerability can be exploited through the HTML5- and Flex-based UIs, the API Explorer interface and API access.

Weakness

The product constructs all or part of an expression language (EL) statement in a framework such as a Java Server Page (JSP) using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended EL statement before it is executed.

Affected Software

Potential Mitigations

• If user-controlled data must be added to an expression interpreter, one or more of the following should be performed:

References

• http://packetstormsecurity.com/files/157909/vCloud-Director-9.7.0.15498291-Remote-Code-Execution.html
• https://citadelo.com/en/blog/full-infrastructure-takeover-of-vmware-cloud-director-CVE-2020-3956/
• https://github.com/aaronsvk/CVE-2020-3956
• https://www.vmware.com/security/advisories/VMSA-2020-0010.html