CVE-2021-21973: VMware vCenter Server and Cloud Foundation Server Side Request Forgery (SSRF) Vulnerability
First published: Wed Feb 24 2021(Updated: )
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).
Credit: security@vmware.com security@vmware.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| VMware Cloud Foundation | >=3.0<3.10.1.2 | |
| VMware Cloud Foundation | >=4.0<4.2 | |
| VMware vCenter Server | =6.5 | |
| VMware vCenter Server | =6.5-a | |
| VMware vCenter Server | =6.5-b | |
| VMware vCenter Server | =6.5-c | |
| VMware vCenter Server | =6.5-d | |
| VMware vCenter Server | =6.5-e | |
| VMware vCenter Server | =6.5-f | |
| VMware vCenter Server | =6.5-update1d | |
| VMware vCenter Server | =6.5-update1e | |
| VMware vCenter Server | =6.5-update1g | |
| VMware vCenter Server | =6.5-update2 | |
| VMware vCenter Server | =6.5-update2b | |
| VMware vCenter Server | =6.5-update2c | |
| VMware vCenter Server | =6.5-update2d | |
| VMware vCenter Server | =6.5-update2g | |
| VMware vCenter Server | =6.5-update3 | |
| VMware vCenter Server | =6.5-update3d | |
| VMware vCenter Server | =6.5-update3f | |
| VMware vCenter Server | =6.5-update3k | |
| VMware vCenter Server | =6.7 | |
| VMware vCenter Server | =6.7-a | |
| VMware vCenter Server | =6.7-b | |
| VMware vCenter Server | =6.7-d | |
| VMware vCenter Server | =6.7-update1 | |
| VMware vCenter Server | =6.7-update1b | |
| VMware vCenter Server | =6.7-update2 | |
| VMware vCenter Server | =6.7-update2a | |
| VMware vCenter Server | =6.7-update2c | |
| VMware vCenter Server | =6.7-update3 | |
| VMware vCenter Server | =6.7-update3a | |
| VMware vCenter Server | =6.7-update3b | |
| VMware vCenter Server | =6.7-update3f | |
| VMware vCenter Server | =6.7-update3g | |
| VMware vCenter Server | =6.7-update3j | |
| VMware vCenter Server | =7.0 | |
| VMware vCenter Server | =7.0-a | |
| VMware vCenter Server | =7.0-b | |
| VMware vCenter Server | =7.0-c | |
| VMware vCenter Server | =7.0-d | |
| VMware vCenter Server | =7.0-update1 | |
| VMware vCenter Server | =7.0-update1a | |
| >=3.0<3.10.1.2 | ||
| >=4.0<4.2 | ||
| =6.5 | ||
| =6.5-a | ||
| =6.5-b | ||
| =6.5-c | ||
| =6.5-d | ||
| =6.5-e | ||
| =6.5-f | ||
| =6.5-update1d | ||
| =6.5-update1e | ||
| =6.5-update1g | ||
| =6.5-update2 | ||
| =6.5-update2b | ||
| =6.5-update2c | ||
| =6.5-update2d | ||
| =6.5-update2g | ||
| =6.5-update3 | ||
| =6.5-update3d | ||
| =6.5-update3f | ||
| =6.5-update3k | ||
| =6.7 | ||
| =6.7-a | ||
| =6.7-b | ||
| =6.7-d | ||
| =6.7-update1 | ||
| =6.7-update1b | ||
| =6.7-update2 | ||
| =6.7-update2a | ||
| =6.7-update2c | ||
| =6.7-update3 | ||
| =6.7-update3a | ||
| =6.7-update3b | ||
| =6.7-update3f | ||
| =6.7-update3g | ||
| =6.7-update3j | ||
| =7.0 | ||
| =7.0-a | ||
| =7.0-b | ||
| =7.0-c | ||
| =7.0-d | ||
| =7.0-update1 | ||
| =7.0-update1a | ||
| VMware vCenter Server and Cloud Foundation |
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Reference Links
Frequently Asked Questions
What is CVE-2021-21973?
CVE-2021-21973 is a vulnerability in VMware vCenter Server and Cloud Foundation that allows for Server Side Request Forgery (SSRF) attacks.
What is the severity of CVE-2021-21973?
The severity of CVE-2021-21973 is medium with a CVSS score of 5.3.
How does CVE-2021-21973 affect VMware products?
CVE-2021-21973 affects VMware vCenter Server and Cloud Foundation versions 6.5, 6.7, and 7.0.
How can CVE-2021-21973 be exploited?
CVE-2021-21973 can be exploited by a malicious actor with network access to port 443 sending a POST request to a vCenter Server plugin.
Is there a fix for CVE-2021-21973?
Yes, VMware has released patches and workarounds to address the vulnerability. Please refer to the VMware security advisory for more information.
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