Issue Snowflake discovered and remediated a vulnerability in the Go Snowflake Driver (“Driver”). When using the Easy Logging feature on Linux and macOS, the Driver 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 Driver versions from 1.7.0 up to, but not including, 1.13.3. Snowflake fixed the issue in version 1.13.3.

Vulnerability Details When using the Easy Logging feature on Linux and macOS, the Driver reads logging configuration from a user-provided file. On Linux and macOS the Driver 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 Driver. 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 1.13.3 of the Go Snowflake Driver, which fixes this issue. We recommend users upgrade to version 1.13.3.

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.

Issue Snowflake was informed via our bug bounty program of a command injection vulnerability in the Snowflake Golang driver via SSO browser URL authentication.

Impacted driver package: gosnowflake

Impacted version range: before Version 1.6.19

Attack Scenario In order to exploit the potential for command injection, an attacker would need to be successful in (1) establishing a malicious resource and (2) redirecting users to utilize the resource. The attacker could set up a malicious, publicly accessible server which responds to the SSO URL with an attack payload. If the attacker then tricked a user into visiting the maliciously crafted connection URL, the user’s local machine would render the malicious payload, leading to a remote code execution.

This attack scenario can be mitigated through URL whitelisting as well as common anti-phishing resources.

Solution On March 21, 2023, Snowflake merged a patch that fixed a command injection vulnerability in the Snowflake Golang driver via SSO browser URL authentication. The vulnerability affected the Snowflake Golang driver before Version 1.6.19. We strongly recommend users upgrade to Version 1.6.19 as soon as possible via the following resources: Go Snowflake Driver

Additional Information If you discover a security vulnerability in one of our products or websites, please report the issue to HackerOne. For more information, please see our Vulnerability Disclosure Policy.