A weakness has been identified in snowflakedb snowflake-jdbc up to 4.0.1. Impacted is the function SdkProxyRoutePlanner of the file src/main/java/net/snowflake/client/internal/core/SdkProxyRoutePlanner.java of the component JDBC URL Handler. Executing a manipulation of the argument nonProxyHosts can lead to inefficient regular expression complexity. The attack can only be executed locally. The exploit has been made available to the public and could be used for attacks. This patch is called 5fb0a8a318a2ed87f4022a1f56e742424ba94052. A patch should be applied to remediate this issue.
Weakness
The product does not properly control the allocation and maintenance of a limited resource.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Snowflake_jdbc | Snowflake | * | 4.0.1 (excluding) |
Potential Mitigations
Mitigation of resource exhaustion attacks requires that the target system either:
The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.
The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/147.html
- https://cwe.mitre.org/data/definitions/227.html
- https://cwe.mitre.org/data/definitions/492.html
References
- https://github.com/snowflakedb/snowflake-jdbc/
- https://github.com/snowflakedb/snowflake-jdbc/commit/5fb0a8a318a2ed87f4022a1f56e742424ba94052
- https://github.com/snowflakedb/snowflake-jdbc/issues/2505
- https://github.com/snowflakedb/snowflake-jdbc/issues/2505#issue-3951994646
- https://snowflakecomputing.atlassian.net/browse/SNOW-3104251
- https://vuldb.com/?ctiid.348035
- https://vuldb.com/?id.348035
- https://vuldb.com/?submit.760428