CVE-2022-39397 in aliyun-oss-client
Summary
by MITRE • 11/23/2022
aliyun-oss-client is a rust client for Alibaba Cloud OSS. Users of this library will be affected, the incoming secret will be disclosed unintentionally. This issue has been patched in version 0.8.1.
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Analysis
by VulDB Data Team • 12/21/2022
The CVE-2022-39397 vulnerability affects the aliyun-oss-client rust library, which serves as a client implementation for Alibaba Cloud Object Storage Service. This client library is widely used by developers integrating Alibaba Cloud storage capabilities into their applications, making the vulnerability particularly concerning from a security perspective. The flaw manifests in how the library handles secret credentials during processing, creating an unintended information disclosure channel that could compromise authentication security.
The technical flaw involves improper handling of secret keys within the library's internal operations, where incoming secret credentials are inadvertently exposed through logging mechanisms or error messages. This type of vulnerability falls under the category of information exposure, specifically mapping to CWE-200 which addresses the exposure of sensitive information. The root cause likely stems from inadequate sanitization of credential data before being processed or logged by the client library, creating a pathway for attackers to obtain valid secret keys that could be used to access Alibaba Cloud storage resources.
The operational impact of this vulnerability extends beyond simple credential exposure, as compromised secrets could enable unauthorized access to cloud storage buckets, data retrieval, and potential modification of stored objects. Attackers could leverage these exposed credentials to perform various malicious activities including data exfiltration, storage manipulation, and potentially escalate privileges within the cloud environment. The vulnerability affects all users of affected versions prior to 0.8.1, creating a significant risk for applications that rely on this client library for cloud storage operations and potentially exposing large volumes of sensitive data stored in Alibaba Cloud OSS.
Organizations should immediately upgrade to version 0.8.1 or later to remediate this vulnerability, as the patch addresses the improper secret handling mechanisms that were previously exposing credentials. Security teams should conduct comprehensive audits of all applications using this library to identify and replace any exposed secrets, implementing proper credential rotation procedures. Additionally, monitoring systems should be enhanced to detect potential credential misuse patterns, and developers should follow secure coding practices that prevent information disclosure in error handling and logging components. This vulnerability demonstrates the critical importance of proper credential management in cloud environments and aligns with ATT&CK technique T1552 which covers credentials in files and T1552.001 which addresses credentials in configuration files, emphasizing the need for comprehensive credential protection strategies in cloud-based applications.