Lemur PKI Compromise — ACME SSRF + Creator IDOR (CVSS 9.1)

by rootkid 29 days ago

macOS • xterm-256color • zsh 2 views

Netflix Lemur 1.9.0 — any SSO-authenticated user creates an ACME authority with attacker-controlled acme_url → outbound HTTP reaches AWS IMDS → STS credentials exfiltrated. Same attacker exploits creator-equality IDOR at certificates/views.py:734 to extract private keys post-ownership-transfer. CWE-918 + CWE-639 + CWE-285. Authorized HackerOne lab.

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