source-controller leaks theAzure Storage SAS token into logs on connection errors

Source controller 安全漏洞

源控制器在连接错误时将Azure存储SAS令牌泄漏到日志中

The source-controller is a Kubernetes operator, specialised in artifacts acquisition from external sources such as Git, OCI, Helm repositories and S3-compatible buckets. The source-controller implements the source.toolkit.fluxcd.io API and is a core component of the GitOps toolkit. Prior to version 1.2.5, when source-controller was configured to use an Azure SAS token when connecting to Azure Blob Storage, the token was logged along with the Azure URL when the controller encountered a connection error. An attacker with access to the source-controller logs could use the token to gain access to the Azure Blob Storage until the token expires. This vulnerability was fixed in source-controller v1.2.5. There is no workaround for this vulnerability except for using a different auth mechanism such as Azure Workload Identity.

Source controller是Flux项目的一个组件。 source-controller 1.2.5之前版本存在安全漏洞。攻击者利用该漏洞可以获取对 Azure Blob 存储的访问权限。

源控制器是一个Kubernetes操作员，专门用于从外部来源获取如Git、OCI、Helm仓库和S3兼容的桶等的制品。源控制器实现了source.toolkit.fluxcd.io API，并且是GitOps工具包的核心组件。在版本1.2.5之前，当源控制器配置为在连接到Azure Blob存储时使用Azure SAS令牌时，如果控制器遇到连接错误，它会在日志中记录Azure URL以及令牌。对于具有访问源控制器日志的攻击者来说，他们可以利用这个令牌直到令牌过期时，进而获取Azure Blob存储的访问权限。这个漏洞在源控制器v1.2.5中得到了修复。对于这个漏洞，除了使用不同的认证机制（如Azure工作负载身份）外，没有其他缓解措施。