Executive Summary

This vulnerability in llama-stack before version 0.4.0rc3 involves the initialization logs of the PGVector memory adapter exposing the plaintext password used for database connections. Specifically, the logs included the full configuration with the actual password visible, which could lead to sensitive credential leakage. The issue was fixed by introducing a safe_config mechanism that censors the password in logs, replacing it with a placeholder to prevent accidental exposure of sensitive information. [1]

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Impact Analysis

The vulnerability can lead to accidental disclosure of database credentials through initialization logs. If an attacker or unauthorized user gains access to these logs, they could obtain the plaintext password for the PGVector database connection, potentially compromising the database security. This could result in unauthorized access to sensitive data stored in the database or further exploitation of the system. [1]

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Detection Guidance

You can detect this vulnerability by inspecting the initialization logs of llama-stack before version 0.4.0rc3 for any plaintext exposure of the PGVector password. Specifically, look for log entries similar to: vector_io::pgvector: Initializing PGVector memory adapter with config: host='...', port=..., db='...', user='...', password='realpassword'. To check logs on a system, you might use commands like `grep 'Initializing PGVector memory adapter' /path/to/llama-stack/logs` or `journalctl -u llama-stack | grep 'pgvector'` to find such log entries containing the password in plaintext. [1]

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Mitigation Strategies

The immediate mitigation is to upgrade llama-stack to version 0.4.0rc3 or later, where the vulnerability is fixed by censoring the PGVector password in initialization logs. If upgrading is not immediately possible, restrict access to log files to prevent unauthorized viewing of sensitive information and consider rotating the exposed PGVector database passwords to reduce risk. The fix involves using a safe_config mechanism that censors passwords in logs, so applying the patch or upgrading is the recommended step. [1]

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Compliance Impact

This vulnerability involves the exposure of plaintext passwords in initialization logs, which could lead to unauthorized disclosure of sensitive credentials. Such exposure can negatively impact compliance with standards and regulations like GDPR and HIPAA that require protection of sensitive information and credentials. By leaking passwords in logs, the vulnerability increases the risk of unauthorized access and data breaches, potentially violating data protection requirements. The fix introduced a mechanism to censor passwords in logs, thereby reducing the risk of credential leakage and helping maintain compliance. [1]

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