CVE-2016-0406 in Solaris
Summary
by MITRE
Unspecified vulnerability in Oracle Sun Solaris 11 allows local users to affect integrity and availability via vectors related to Libc.
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Analysis
by VulDB Data Team • 07/05/2022
The vulnerability identified as CVE-2016-0406 represents a significant security weakness within Oracle Sun Solaris 11 operating system, specifically affecting the libc library component. This unspecified flaw resides within the core system library that provides essential functions for program execution and system operations. The vulnerability's classification as affecting integrity and availability indicates that malicious local users could potentially manipulate system data and disrupt service operations, creating serious implications for system security and reliability. The libc library serves as a fundamental building block for system functionality, making any compromise of its integrity particularly dangerous as it could affect numerous system processes and applications.
The technical nature of this vulnerability stems from implementation flaws within the Solaris 11 libc library, which handles critical system calls and memory management operations. Local users with access to the system can exploit this weakness to potentially corrupt data integrity or cause system instability that affects availability. The unspecified nature of the vulnerability description suggests that the exact technical mechanism remains undisclosed, which is common for certain classes of flaws that could be easily weaponized if fully detailed. This particular weakness likely involves improper input validation, memory corruption, or privilege escalation mechanisms that allow unauthorized modifications to system resources.
From an operational impact perspective, this vulnerability creates substantial risk for organizations relying on Solaris 11 systems, as local privilege escalation or data integrity compromise could lead to complete system takeover or service disruption. The availability impact means that attackers could potentially cause system crashes or resource exhaustion, while integrity compromise allows for unauthorized modification of critical system files or data. The local nature of the attack vector suggests that exploitation requires physical or authenticated access to the system, but once achieved, the impact could extend to affecting multiple system components that depend on libc functionality. This vulnerability particularly affects enterprise environments where Solaris systems host critical applications and data processing functions.
Security professionals should prioritize patching this vulnerability through Oracle's official security updates, as the libc library is fundamental to system operation and any compromise could enable broader attack vectors. Organizations should conduct thorough assessments of their Solaris 11 deployments to identify systems requiring immediate patching and implement monitoring for suspicious activities that might indicate exploitation attempts. The vulnerability aligns with CWE-119 which addresses weaknesses in memory management and improper access to memory locations, and may also relate to ATT&CK techniques involving privilege escalation and defense evasion. System administrators should also consider implementing additional security controls such as mandatory access controls and enhanced logging to detect potential exploitation attempts. Given the critical nature of libc components, regular security assessments and vulnerability management processes should include specific checks for similar weaknesses in system libraries and core components.