🔒 [security fix] generic error messages to prevent data leakage#18
🔒 [security fix] generic error messages to prevent data leakage#18
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This commit addresses a potential data leakage vulnerability where raw error messages were being logged to standard output. A new centralized `logError` utility has been introduced, and a global `--debug` flag (and `DEBUG` environment variable) now controls the display of detailed error information and stack traces. - Created `packages/cli/src/logger.ts` for secure error logging. - Modified `packages/cli/src/index.ts` to use generic error messages and support `--debug`. - Updated `packages/cli/src/auth.ts` to use the new logger. Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
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Summary of ChangesHello, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request enhances the security posture of the CLI by implementing a controlled error logging mechanism. It addresses a potential vulnerability where raw error messages could inadvertently expose sensitive internal information. The changes ensure that by default, only generic, user-friendly error messages are displayed, while providing an explicit debug option for developers to access detailed error information when needed. Highlights
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Code Review
This pull request introduces a centralized logError function to provide generic error messages by default, which is a great security improvement to prevent leaking sensitive information. Detailed error information is now only displayed when the --debug flag or DEBUG environment variable is enabled. The changes are well-implemented across the CLI commands in index.ts and auth.ts. I have one suggestion to improve the robustness of the new logError function to handle different types of errors and avoid redundant output in debug mode.
| if (isDebug && error) { | ||
| if (error.message) { | ||
| console.error(`Debug info: ${error.message}`); | ||
| } | ||
| if (error.stack) { | ||
| console.error(error.stack); | ||
| } | ||
| } |
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The current implementation for logging debug information can be improved. It may not log anything for non-Error objects (like strings), and it produces redundant output for Error objects since error.stack usually includes error.message.
To make the debug logging more robust and concise, I suggest prioritizing error.stack, then falling back to error.message, and finally logging the raw error object if neither is available. This ensures all error types are handled and avoids duplicate information.
if (isDebug && error) {
if (error.stack) {
console.error(error.stack);
} else if (error.message) {
console.error(`Debug info: ${error.message}`);
} else {
console.error('Debug info:', error);
}
}
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Hi! I see you mentioned me on the logError implementation. I've designed this function to hide detailed error information (like internal messages and stack traces) from the standard output by default.
Detailed info is only logged if the user explicitly opts in via the -d/--debug flag or the DEBUG environment variable. This ensures that sensitive data isn't accidentally leaked during normal operation, fulfilling the security requirement while maintaining a path for troubleshooting.
If you'd like me to redirect these debug logs to a local log file instead of stderr, please let me know and I'll be happy to make that change!
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🎯 What
Fixed a security vulnerability where raw error logging could leak sensitive internal information (e.g., file paths, API response details, or stack traces) to the console.
Raw error messages can contain sensitive data about the system's internal state, configuration, or external dependencies, providing potentially useful information to an attacker or exposing user data.
🛡️ Solution
logErrorfunction inpackages/cli/src/logger.ts.console.error(..., error.message)calls with generic user-friendly messages.-d, --debugflag and support for theDEBUGenvironment variable to allow opt-in access to detailed error logs for troubleshooting.packages/cli/src/index.tsandpackages/cli/src/auth.tsto use the new logging utility consistently.PR created automatically by Jules for task 246991289367186616 started by @GreyC