CVE-2016-5544 in Solaris
Summary
by MITRE
Unspecified vulnerability in Oracle Sun Solaris 10 and 11.3 allows local users to affect confidentiality, integrity, and availability via vectors related to Kernel/X86.
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Analysis
by VulDB Data Team • 09/27/2022
This vulnerability resides within the kernel component of Oracle Solaris operating systems version 10 and 11.3, specifically affecting the x86 architecture implementation. The unspecified nature of the flaw indicates that the exact technical mechanism remains undisclosed, though it operates within the core kernel subsystem that governs system operations and resource management. Such vulnerabilities typically arise from insufficient input validation, improper privilege handling, or memory management errors that can be exploited by local attackers who already possess system access. The impact spans all three fundamental security properties defined by the CIA triad, meaning attackers could potentially read sensitive data, modify system files, or disrupt system operations entirely. The x86 architecture context suggests the vulnerability may involve instruction set handling, privilege level transitions, or hardware abstraction layer interactions that are specific to intel-based systems running Solaris.
The operational implications of this vulnerability are severe given that local users already have system access, which significantly reduces the attack surface complexity. Attackers could leverage this flaw to escalate privileges, access restricted system resources, or manipulate kernel data structures. The confidentiality impact suggests potential exposure of sensitive system information including user credentials, system configurations, or other protected data. Integrity concerns indicate that attackers might modify critical system components or data, potentially leading to persistent backdoors or system corruption. Availability threats could manifest as system crashes, denial of service conditions, or complete system compromise that prevents normal operations. The vulnerability's presence in both Solaris 10 and 11.3 indicates it likely affects a broad range of legacy systems that organizations may still be maintaining in production environments, creating extended exposure windows.
Security professionals should recognize this vulnerability as potentially aligning with common weakness enumerations such as CWE-20 for input validation issues or CWE-254 for security features that are not properly implemented. The attack patterns would likely correspond to privilege escalation techniques within the ATT&CK framework under privilege escalation tactics, potentially utilizing kernel-level exploits to gain higher system privileges. Organizations should implement immediate patch management strategies to address this vulnerability, particularly in environments where local access cannot be strictly controlled. System hardening measures including limiting local user accounts, implementing strict access controls, and monitoring for suspicious kernel activity can provide additional protective layers. Regular vulnerability assessments should focus on identifying systems running affected Solaris versions and ensure that appropriate security controls are in place to minimize the risk of exploitation. The unspecified nature of the vulnerability makes it particularly concerning as it may represent a class of issues that could affect multiple similar systems and requires proactive security measures to prevent potential exploitation by determined attackers.