Possible SSRF via VMware Workspace One Access instanceHealth CVE-2021-22056

ATT&CK techniques

Initial Access → Cred Access

Recon
Resource Dev
Initial Access
- T1190Exploit Public-Facing Application
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
- T1552Unsecured Credentials
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects HTTP requests to the VMware Workspace One Access instanceHealth REST endpoint that inject an at-sign into the hostName parameter. CVE-2021-22056 abuses this health-check path for server-side request forgery as detailed by Assetnote, which can leak an admin JWT and reach internal services.

Reporting behind it

Related detections9 linkedT1190 — drag to rearrange

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Possible SSRF via VMware Workspace One Access instanceHealth CVE-2021-22056

Pivot detection · T1190 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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