CVE-2015-4922 in Solaris
Summary
by MITRE
Unspecified vulnerability in Oracle Sun Solaris 11 allows local users to affect availability via vectors related to Boot.
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Analysis
by VulDB Data Team • 07/05/2022
The vulnerability identified as CVE-2015-4922 resides within Oracle Sun Solaris 11 operating system and represents a significant threat to system availability through boot-related mechanisms. This unspecified weakness specifically targets the boot process of the Solaris operating system, which serves as the foundational element for system initialization and overall operational stability. The local nature of this vulnerability indicates that exploitation requires prior access to the target system, typically through legitimate user accounts or administrative privileges, making it particularly concerning for environments where privilege escalation risks are present. The boot process in Solaris 11 encompasses multiple stages including firmware initialization, kernel loading, and system service startup, each presenting potential attack surfaces for malicious actors seeking to disrupt normal system operations.
The technical flaw associated with CVE-2015-4922 operates within the boot subsystem of Solaris 11, potentially affecting critical components such as the boot loader, kernel initialization routines, or system service management during startup sequences. This vulnerability type aligns with CWE-119, which addresses weaknesses in memory handling and buffer overflows that can occur during system initialization phases. Attackers exploiting this vulnerability could potentially cause system crashes, boot failures, or complete system unavailability, thereby disrupting business operations and service continuity. The impact extends beyond simple denial of service to encompass potential data loss scenarios where system downtime prevents proper shutdown procedures and data synchronization. The vulnerability's classification as boot-related places it within the purview of ATT&CK technique T1070.004, which covers the use of system binaries and boot processes for persistence and privilege escalation activities.
The operational impact of this vulnerability manifests as a direct threat to system availability and reliability within Oracle Sun Solaris 11 environments. Local users with sufficient privileges can leverage this weakness to compromise the boot process, potentially leading to complete system outages that require manual intervention and system restoration procedures. Organizations relying on Solaris 11 for critical infrastructure operations face significant risk exposure, particularly in mission-critical applications where uptime and availability are paramount. The vulnerability's nature suggests that it may be exploitable through manipulation of boot configuration files, kernel parameters, or system initialization scripts that govern how the operating system loads and initializes core components. Recovery from such an attack typically involves system reinstallation, data restoration from backups, and comprehensive security assessments to ensure no additional compromise has occurred. The risk is compounded by the fact that boot-level vulnerabilities are often difficult to detect and remediate without complete system restarts, making them particularly challenging for security operations teams to address effectively.
Mitigation strategies for CVE-2015-4922 should focus on comprehensive system hardening and access control measures to prevent unauthorized local access to critical boot components. System administrators must implement strict privilege controls, regular security assessments, and monitoring of boot-related processes to detect potential exploitation attempts. Patch management procedures should be prioritized to ensure timely deployment of Oracle security updates addressing this vulnerability. The implementation of secure boot mechanisms and integrity checking of boot components can provide additional layers of protection against unauthorized modifications. Network segmentation and least privilege principles should be enforced to limit local access rights and reduce the attack surface for potential exploitation. Regular system auditing and log monitoring of boot processes can help identify anomalous activities that may indicate attempted exploitation of this vulnerability. Organizations should also maintain comprehensive backup and recovery procedures specifically designed for boot-level failures to minimize downtime during incident response activities.