CVE-2016-5471 in Solaris
Summary
by MITRE
Unspecified vulnerability in Oracle Sun Solaris 11.3 allows local users to affect availability via vectors related to Kernel, a different vulnerability than CVE-2016-3497 and CVE-2016-5469.
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Analysis
by VulDB Data Team • 09/08/2022
This vulnerability resides within Oracle Sun Solaris 11.3 operating system and represents a local privilege escalation issue that specifically targets the kernel component of the system. The flaw enables authenticated local users to potentially disrupt system availability through kernel-related attack vectors that differ from other known vulnerabilities in the same timeframe. The vulnerability classification indicates it operates at the kernel level where system stability and resource management are critical components. Such kernel-level weaknesses often provide attackers with the most significant impact potential since they can manipulate core system functions and potentially compromise the entire operating environment.
The technical nature of this vulnerability suggests it involves kernel memory management, system call handling, or resource allocation mechanisms that could be exploited by local users who already possess system access. Attackers could potentially leverage this weakness to cause system crashes, denial of service conditions, or other availability impacts that would affect normal system operations. The vulnerability's distinction from CVE-2016-3497 and CVE-2016-5469 indicates it operates through different attack vectors or system components, making it a separate but equally concerning threat within the Solaris 11.3 ecosystem. These kernel-level issues typically fall under CWE-119 which addresses memory safety problems, or CWE-122 which covers buffer overflow conditions that can affect kernel memory structures.
The operational impact of this vulnerability extends beyond simple system crashes as it represents a potential pathway for attackers to undermine system reliability and availability. Local users who can exploit this weakness may be able to cause repeated system instability, forcing administrators to perform emergency restarts or implement emergency patches. The availability impact could be particularly severe in enterprise environments where Solaris systems serve critical functions and system uptime is essential for business operations. Organizations running Solaris 11.3 systems may experience unexpected service interruptions, performance degradation, or complete system failures that could affect multiple users and applications simultaneously.
Mitigation strategies should prioritize immediate patching from Oracle as the primary defense mechanism against this vulnerability. System administrators should also implement monitoring solutions to detect unusual system behavior that might indicate exploitation attempts. The principle of least privilege should be enforced to limit local user access where possible, reducing the attack surface for potential exploitation. Additionally, organizations should consider implementing kernel-level security modules or integrity checking mechanisms that can detect unauthorized modifications to kernel components. This vulnerability aligns with ATT&CK technique T1068 which covers 'Exploitation for Privilege Escalation' and may also relate to T1499 which covers 'Endpoint Denial of Service' as the availability impact could result from system resource exhaustion or kernel manipulation. Regular system hardening practices and vulnerability assessments should be conducted to identify and remediate similar kernel-level weaknesses before they can be exploited by malicious actors.