CVE-2018-2858 in Sun ZFS Storage Appliance Kit
Summary
by MITRE
Vulnerability in the Sun ZFS Storage Appliance Kit (AK) component of Oracle Sun Systems Products Suite (subcomponent: HTTP data path subsystems). The supported version that is affected is Prior to 8.7.17. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Sun ZFS Storage Appliance Kit (AK). Successful attacks of this vulnerability can result in unauthorized read access to a subset of Sun ZFS Storage Appliance Kit (AK) accessible data. CVSS 3.0 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).
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Analysis
by VulDB Data Team • 03/03/2023
The vulnerability identified as CVE-2018-2858 resides within the Sun ZFS Storage Appliance Kit component of Oracle Sun Systems Products Suite, specifically affecting the HTTP data path subsystems. This security flaw impacts versions prior to 8.7.17 and represents a significant concern for organizations utilizing Oracle's storage infrastructure. The vulnerability operates within the realm of network-based attacks where an unauthenticated adversary can exploit the flaw through HTTP protocols to gain unauthorized access to sensitive data within the storage appliance environment.
This vulnerability manifests as a critical weakness in the authentication and authorization mechanisms of the HTTP subsystem within the ZFS Storage Appliance Kit. The flaw allows attackers to perform unauthorized read operations against specific data subsets accessible through the appliance's HTTP interface. The CVSS score of 5.3 indicates a moderate severity level with particular emphasis on confidentiality impacts, suggesting that while the attack vector is relatively accessible, the primary damage lies in data exposure rather than system compromise or denial of service. The vulnerability's classification as easily exploitable indicates that minimal technical expertise or resources are required to execute successful attacks against affected systems.
The operational impact of CVE-2018-2858 extends beyond simple data theft, as it represents a fundamental breakdown in the security perimeter of storage infrastructure. Organizations utilizing affected ZFS Storage Appliance Kit versions face potential exposure of sensitive enterprise data including customer information, proprietary business data, and other confidential assets stored within the appliance. The vulnerability's network accessibility means that attackers can potentially exploit this weakness from external positions without requiring physical access or prior authentication credentials, making it particularly dangerous for organizations with exposed storage appliances on their network perimeters.
From a cybersecurity framework perspective, this vulnerability aligns with CWE-284 (Improper Access Control) and represents a clear violation of the principle of least privilege in storage system security. The attack pattern follows typical lateral movement and data exfiltration techniques described in MITRE ATT&CK framework under the T1071.004 (Application Layer Protocol: Web Protocols) and T1005 (Data from Local System) tactics. Organizations should consider this vulnerability as part of a broader attack surface assessment, particularly when evaluating their storage infrastructure security posture and implementing defense-in-depth strategies.
The recommended mitigation strategy involves immediate deployment of Oracle's security patches and updates to versions 8.7.17 or later, which address the underlying authentication and access control flaws within the HTTP subsystem. Network administrators should also implement additional protective measures including firewall rules restricting HTTP access to the appliance, network segmentation to isolate storage infrastructure, and monitoring for unusual HTTP traffic patterns. Organizations should conduct thorough vulnerability assessments to identify all instances of affected appliances within their environment and establish incident response procedures to detect and respond to potential exploitation attempts. Regular security audits and continuous monitoring of storage system access logs will help identify anomalous behavior that might indicate exploitation of this vulnerability or similar weaknesses in the storage infrastructure.