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GHSA-c82r-c9f7-f5mj
No affected components available
Issue
Snowflake discovered and remediated a vulnerability in the Snowflake Connector for .NET (“Connector”). When using the Easy Logging feature on Linux and macOS, the Connector didn’t correctly verify the permissions of the logging configuration file, potentially allowing an attacker with local access to overwrite the configuration and gain control over logging level and output location.
This vulnerability affects Connector versions 2.1.2 through 4.4.0. Snowflake fixed the issue in version 4.4.1.
Vulnerability Details
When using the Easy Logging feature on Linux and macOS, the Connector reads logging configuration from a user-provided file. On Linux and macOS, the Connector verifies that the configuration file can be written to only by its owner. That check was vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition and failed to verify that the file owner matches the user running the Connector. This could allow a local attacker with write access to the configuration file or the directory containing it to overwrite the configuration and gain control over logging level and output location.
Solution
Snowflake released version 4.4.1 of the Snowflake Connector for .NET, which fixes this issue. We recommend users upgrade to version 4.4.1.
Additional Information
If you discover a security vulnerability in one of our products or websites, please report the issue to Snowflake through our Vulnerability Disclosure Program hosted at HackerOne. For more information, please see our Vulnerability Disclosure Policy.
The vulnerability requires local access to the device to be exploited. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information.
Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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