CVE-2020-4591 in Spectrum Protect
Summary
by MITRE
IBM Spectrum Protect Server 8.1.0.000 through 8.1.10.000 could disclose sensitive information in nondefault settings due to occasionally not encrypting the second chunk of an object in an encrypted container pool. IBM X-Force ID: 184746.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 11/11/2020
The vulnerability identified as CVE-2020-4591 affects IBM Spectrum Protect Server versions 8.1.0.000 through 8.1.10.000, representing a significant security flaw in the data encryption mechanisms of this enterprise storage solution. This issue manifests specifically within encrypted container pools where the system fails to consistently encrypt all data chunks of objects, creating potential exposure of sensitive information. The vulnerability arises from the inconsistent application of encryption protocols during object storage operations, particularly impacting the second chunk of data within container pools. Organizations utilizing this storage platform in environments where data confidentiality is paramount face increased risk of information disclosure when the system operates under nondefault configurations that trigger this encryption gap.
The technical root cause of this vulnerability stems from improper implementation of encryption algorithms within the container pool management system of IBM Spectrum Protect Server. When objects are stored in encrypted container pools, the system is designed to encrypt all data chunks to maintain confidentiality. However, the flaw occurs during the processing of objects where the second chunk of data within an object fails to undergo encryption, even when the first chunk and subsequent chunks are properly protected. This inconsistency creates a potential attack surface where adversaries could potentially access unencrypted data portions, particularly when the system operates with nondefault configurations that expose this encryption gap. The vulnerability is classified as a weakness in cryptographic implementation, specifically related to incomplete encryption coverage, which aligns with CWE-327 - Use of a Broken or Risky Cryptographic Algorithm and CWE-310 - Cryptographic Issues.
The operational impact of this vulnerability extends beyond simple data exposure, as it undermines the fundamental security assumptions of encrypted storage environments. Organizations relying on IBM Spectrum Protect Server for critical data protection may experience unauthorized access to sensitive information when the second chunk of objects remains unencrypted, particularly in scenarios where the system handles highly confidential data such as financial records, personal identification information, or proprietary business data. The risk is amplified in nondefault configurations where the encryption failure becomes more pronounced, potentially affecting multiple objects within a container pool simultaneously. This vulnerability affects the integrity and confidentiality guarantees that organizations expect from their storage encryption mechanisms, potentially leading to compliance violations under data protection regulations such as GDPR, HIPAA, or SOX requirements. The impact is particularly severe in environments where data is processed in container pools, as the vulnerability affects the consistency of encryption protection across all data chunks.
Mitigation strategies for CVE-2020-4591 require immediate attention from system administrators and security teams responsible for IBM Spectrum Protect Server deployments. The primary recommendation involves applying the official IBM security patches and updates that address the encryption inconsistency in container pools, ensuring that all data chunks within objects receive proper encryption treatment. Organizations should also implement comprehensive monitoring of container pool operations to detect any anomalies in encryption behavior and establish regular audits of encryption configurations to verify proper implementation. Additionally, security teams should consider implementing additional layers of protection such as network segmentation, access controls, and data loss prevention measures to minimize potential impact if the vulnerability is exploited. The remediation process should include thorough testing of patched environments to ensure that encryption consistency is maintained across all object chunks, and system administrators should verify that nondefault configurations do not inadvertently expose the vulnerability. Organizations should also review their data classification policies and ensure that sensitive data is not stored in environments where this vulnerability could potentially impact encryption effectiveness, aligning with ATT&CK technique T1566 - Phishing and T1531 - Account Access Removal to prevent unauthorized data access through compromised storage systems.