Malicious Ingress-nginx Configuration Injection via Kubernetes Audit (via kubernetes)

ATT&CK techniques

Initial Access → Discovery

Recon
Resource Dev
Initial Access
- T1190Exploit Public-Facing Application
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
- T1613Container and Resource Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects Ingress objects whose path field carries a double quote together with nginx configuration directives in Kubernetes audit logs. This matches exploitation of the ingress-nginx configuration injection vulnerabilities where attackers smuggle directives such as return set try_files and ssl_engine into the generated nginx config. A path value containing a quote and nginx directives indicates an attempted configuration injection.

Reporting behind it

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Malicious Ingress-nginx Configuration Injection via Kubernetes Audit (via kubernetes)

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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