The vSphere Client (HTML5) contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue by sending a POST request to vCenter Server plugin leading to information disclosure. This affects: VMware vCenter Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 3.10.1.2).

A server-side request forgery vulnerability exists in the VMware vCenter vSphere HTML5 client due to improper validation of URLs in a vCenter Server plugin. An unauthenticated, remote attacker can exploit this, via HTTPS, leading to information disclosure.

The vSphere Client (HTML5) contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue by sending a POST request to vCenter Server plugin leading to information disclosure.

The version of VMware vCenter Server installed on the remote host is 6.5 prior to 6.5 U3n, 6.7 prior to 6.7 U3l or 7.0 prior to 7.0 U1c. It is, therefore, affected by multiple vulnerabilities, as follows:

  - The vSphere Client (HTML5) contains a remote code execution vulnerability in a vCenter Server plugin. A malicious     actor with network access to port 443 may exploit this issue to execute commands with unrestricted privileges on the     underlying operating system that hosts vCenter Server. This affects VMware vCenter Server (7.x before 7.0 U1c, 6.7     before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 3.10.1.2).
    (CVE-2021-21972)

  - The vSphere Client (HTML5) contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation     of URLs in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue by     sending a POST request to vCenter Server plugin leading to information disclosure. This affects: VMware vCenter     Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2     and 3.x before 3.10.1.2). (CVE-2021-21973)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version   number. Nessus has also not tested for the presence of a workaround.

ID	Name	Product	Family	Severity
164351	VMware vCenter Server SSRF (CVE-2021-21973) (Direct Check)	Nessus	Misc.	medium
113241	VMWare vCenter Server 7.0 < 7.0 U1c / 6.7 < 6.7 U3l / 6.5 < 6.5 U3n Server Side Request Forgery	Web App Scanning	Component Vulnerability	medium
146826	VMware vCenter Server 6.5 / 6.7 / 7.0 Multiple Vulnerabilities (VMSA-2021-0002)	Nessus	Misc.	critical

Detections

Analytics

CVE-2021-21973

medium

Tenable Plugins

medium

medium

critical