CVE-2019-4267 in Spectrum Protect
Summary
by MITRE
The IBM Spectrum Protect 7.1 and 8.1 Backup-Archive Client is vulnerable to a buffer overflow. This could allow execution of arbitrary code on the local system or the application to crash. IBM X-Force ID: 160200.
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Analysis
by VulDB Data Team • 11/05/2023
The vulnerability identified as CVE-2019-4267 affects IBM Spectrum Protect versions 7.1 and 8.1 within the Backup-Archive Client component, representing a critical buffer overflow condition that poses significant security risks to affected systems. This flaw exists within the client-side application responsible for backup and archive operations, making it a prime target for attackers seeking to compromise enterprise backup infrastructure. The vulnerability stems from inadequate input validation mechanisms that fail to properly handle excessive data inputs in specific memory allocation scenarios. According to the IBM X-Force ID 160200 reference, this issue demonstrates the potential for remote code execution or system crashes when malicious data is processed through the vulnerable client application.
The technical implementation of this buffer overflow occurs when the Backup-Archive Client processes certain input parameters without proper bounds checking, allowing attackers to overwrite adjacent memory locations with malicious data. This type of vulnerability falls under CWE-121, which categorizes buffer overflow conditions where insufficient boundary checking allows memory to be overwritten. The flaw typically manifests when the application receives malformed input through backup operations or configuration parameters, particularly in scenarios involving file paths, archive names, or network communication parameters. The vulnerability's exploitation potential is heightened by the fact that backup clients often run with elevated privileges to perform their operations, potentially allowing attackers to gain system-level access if successful.
From an operational standpoint, this vulnerability presents severe implications for enterprise security infrastructure, as backup systems are often considered trusted components within network environments. The potential for arbitrary code execution means that attackers could install malware, escalate privileges, or establish persistence mechanisms within backup client environments. System crashes from the buffer overflow could also disrupt critical backup operations, potentially leading to data loss or service interruptions during recovery operations. The attack surface is particularly concerning because backup clients frequently process untrusted data from various sources including network communications, file system operations, and user inputs, making the exploitation vector more accessible than initially apparent. Organizations using these vulnerable versions face potential data breaches, system compromise, and operational disruptions that could affect their disaster recovery capabilities.
Mitigation strategies for CVE-2019-4267 should prioritize immediate patching of affected IBM Spectrum Protect installations to version 8.1.3 or later, which contains the necessary fixes for the buffer overflow condition. Network segmentation and access controls should be implemented to limit exposure of backup clients to untrusted networks or users, following principle of least privilege models. Monitoring systems should be enhanced to detect unusual backup client behavior or attempted exploitation attempts through log analysis and anomaly detection. Security teams should conduct comprehensive vulnerability assessments of their backup infrastructure to identify any other potentially affected components or configurations. The remediation process should also include reviewing and updating backup client configurations to ensure proper input validation and implementing application whitelisting controls where possible. Organizations should also consider implementing intrusion detection systems specifically configured to monitor for exploitation attempts targeting backup client processes, as these systems represent critical infrastructure components that require robust protection measures aligned with enterprise security frameworks and threat modeling approaches.