b876e02c3a
TOTP enrollment previously round-tripped the generated secret through a hidden form field and saved whatever the client submitted, letting an attacker with session access enroll a 2FA device they control by posting their own secret plus a matching code. Stash the secret in the session at GET /totp/new, read it only from the session at POST /totp, and drop the hidden field from the view. Notify the user by email on successful enrollment so unauthorized activations are visible even if a new vector appears later. Co-Authored-By: Claude Opus 4 <noreply@anthropic.com>
10 lines
292 B
Plaintext
10 lines
292 B
Plaintext
Hello,
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Two-factor authentication was just enabled on the Clinch account for
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<%= @user.email_address %>.
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If you did this, you can ignore this email.
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If you did NOT do this, your account may have been accessed by someone
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else. Reset your password immediately and contact your administrator.
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