Possible SSRF to AWS Metadata via Workspace One UEM BlobHandler CVE-2021-22054
- Category
- webserver
- Author
- HuntRule
- Published
- 2026-09-07
- Updated
- 2026-09-07
ATT&CK techniques
Initial Access → Cred AccessRecon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule detects HTTP requests to the VMware Workspace One UEM Catalog or AirWatch BlobHandler.ashx endpoint that reference the AWS instance metadata service. Assetnote documented CVE-2021-22054 as a pre-auth server-side request forgery through this handler, letting attackers reach 169.254.169.254 and harvest cloud credentials.
Reporting behind it
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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