gitoxide Credential Helper CR Injection via Malicious URLs

Executive Summary

gitoxide before 0.38.2 does not properly check for carriage return characters in URLs sent to credential helpers. Attackers can insert these characters to manipulate the URL and trick credential helpers into returning credentials for different hosts than intended.

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Detection Guidance

This vulnerability involves gitoxide failing to validate carriage return characters in URLs passed to credential helpers. To detect it, inspect git configuration files for suspicious URLs containing carriage returns or unusual protocol fields. Check credential helper logs for unexpected credential requests or responses.

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Impact Analysis

If you use gitoxide versions before 0.38.2, an attacker could steal your credentials by crafting malicious URLs with hidden carriage returns. This could lead to unauthorized access to repositories or other systems using those credentials.

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Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, potentially violating GDPR (data protection) or HIPAA (health information privacy) by exposing credentials and allowing access to protected resources.

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Mitigation Strategies

Immediately update gitoxide to version 0.38.2 or later. Review and remove any custom credential helpers or configurations that may be vulnerable. Monitor network traffic for unauthorized credential requests or unusual protocol interactions.

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