⚠ Actively exploited

Added to CISA KEV on 2022-03-07. Federal agencies required to patch by 2022-03-21. Required action: Apply updates per vendor instructions..

CVE-2021-21973 — Server-Side Request Forgery in Vmware Cloud Foundation

CWE-918 — Server-Side Request Forgery CWE-20 — Improper Input Validation7 documents7 sources

Severity

5.3MEDIUMNVD

EPSS

90.3%

top 0.40%

CISA KEV

KEV

Added 2022-03-07

Due 2022-03-21

Exploit

Exploited in wild

Active exploitation observed

Affected products

Vmware Cloud Foundation Vmware Cloud Foundation Vmware Vcenter Server +1 more

Timeline

PublishedFeb 24

KEV addedMar 7

KEV dueMar 21

Latest updateMay 24

CISA Required Action: Apply updates per vendor instructions.

Description

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).

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NExploitability: 3.9 | Impact: 1.4

Affected Packages4 packages

▶NVDvmware/vcenter_server6.5, 6.7, 7.0+2

▶CVEListV5vmware/vmware_vcenter_server6.5 before 6.5 U3n, 6.7 before 6.7 U3l, 7.x before 7.0 U1c+2

▶NVDvmware/cloud_foundation3.0 — 3.10.1.2+1

▶CVEListV5vmware/vmware_cloud_foundation3.x before 3.10.1.2, 4.x before 4.2+1

🔴Vulnerability Details

GHSA

GHSA-5j6h-79mj-qfq2: The vSphere Client (HTML5) contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in a vCenter Server plugin↗2022-05-24

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CVEList

CVE-2021-21973: The vSphere Client (HTML5) contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in a vCenter Server plugin↗2021-02-24

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VulnCheck

VMware vCenter Server and Cloud Foundation Server Side Request Forgery (SSRF) Vulnerability↗2021

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💥Exploits & PoCs

Nuclei

VMware vSphere - Server-Side Request Forgery

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📋Vendor Advisories

CISA

VMware vCenter Server and Cloud Foundation Server Side Request Forgery (SSRF) Vulnerability↗2022-03-07

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VMware

VMware ESXi and vCenter Server updates address multiple security vulnerabilities (CVE-2021-21972, CVE-2021-21973, CVE-2021-21974)↗2021-02-23

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