T05 · Unauthorized Access and Privilege Escalation
Error
- Location
SKILL.md:86- Finding
Mailbox Credentials Are Printed into Agent and Terminal Context
- Content
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/dev/null ``` The accompanying instructions require checking whether `IMAP_PASS` is populated and later direct the Skill to read the email address and password from the same `.env` file. ### Technical Analysis The preflight check only needs to determine whether the email integration is configured. Printing the entire `.env` file is unnecessary for that purpose and violates least privilege. Because the command uses `cat`, every variable in the file—including an IMAP password, application password, or authorization token—is written to standard output. In an agent-driven environment, that output can enter the conversation context, execution logs, retained transcripts, screenshots, or telemetry. The embedded Python scripts do not access the credentials directly, and no credential-exfiltration endpoint was identified. Nevertheless, exposing the secret to the agent and its output channels materially expands the credential's exposure surface. ### Attack Path 1. A user invokes the invoice-processing Skill. 2. The mandatory preflight instructions cause the agent to execute the `cat` command. 3. The complete email configuration file is printed. 4. The mailbox password or application token becomes part of terminal output or agent context. 5. Any party or component with access to retained logs, transcripts, or output can recover and reuse the credential. ### Impact Assessment Successful exposure grants whatever access the configured email credential permits. Depending on the provider and token scope, this can include reading private messages and attachments, searching historical email, downloading sensitive documents, and possibly sending mail. ...[truncated 139 chars]- Remediation
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