aws-iam-passrole-chain
AWS IAM privilege escalation via `iam:PassRole` chains — Lambda/Glue/Sagemaker/EC2/ECS PassRole to a higher-priv role, AssumeRole chains across accounts, sts:GetCallerIdentity recon, account hijack via legacy root-mfa-bypass.
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Critical
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Security
3 findings: 2 critical severity, 1 high severity. Installing this skill is not recommended: please review these findings carefully if you do intend to do so.
E005: Suspicious download URL detected in skill instructions.
What this means
Detected a suspicious URL in the skill instructions that could lead the agent to download and execute malicious scripts or binaries. This includes links to executables from untrusted sources, typosquatting of official packages, URL shorteners that obscure the destination, and personal file hosting services.
Why it was flagged
This set includes an explicit attacker-controlled external endpoint (https://attacker.com/x) used to receive exfiltrated instance credentials, which is a clear malicious/suspicious destination.
E006: Malicious code pattern detected in skill scripts.
What this means
Detected high-risk code patterns in the skill content — including its prompts, tool definitions, and resources — such as data exfiltration, backdoors, remote code execution, credential theft, system compromise, supply chain attacks, and obfuscation techniques.
Why it was flagged
This document is an explicit, step-by-step guide for abusing AWS iam:PassRole and related services to escalate privileges, obtain higher-privilege credentials, and exfiltrate them to an attacker-controlled endpoint, showing clear malicious intent and OPSEC guidance to evade detection.
W007: Insecure credential handling detected in skill instructions.
What this means
The skill handles credentials insecurely by requiring the agent to include secret values verbatim in its generated output. This exposes credentials in the agent’s context and conversation history, creating a risk of data exfiltration.
Why it was flagged
The skill explicitly instructs creating functions and instance user-data that read AWS credentials (AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_SESSION_TOKEN) and return or POST them, which requires the LLM/agent to handle and output secret values verbatim (exfiltration).
- Repository
- PurpleAILAB/Decepticon
- Commit
e34afba
- Audited
- Security analysis
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