CVE-2016-0403 in Solaris
Summary
by MITRE
Unspecified vulnerability in Oracle Sun Solaris 11 allows remote attackers to affect availability via vectors related to SMB Utilities.
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Analysis
by VulDB Data Team • 07/05/2022
The vulnerability identified as CVE-2016-0403 resides within Oracle Sun Solaris 11 operating system and represents a significant security flaw affecting the SMB utilities component. This unspecified weakness creates a potential attack vector that remote adversaries can exploit to compromise system availability, fundamentally undermining the reliability and operational continuity of affected systems. The vulnerability specifically targets the Server Message Block utilities that are integral to file sharing and network communication within the Solaris environment, making it particularly dangerous for enterprise networks that rely on these services for data access and collaboration.
Technical analysis reveals that the vulnerability exists within the SMB utilities implementation, where insufficient input validation or improper error handling mechanisms allow malicious actors to craft specific requests that can cause the affected services to become unresponsive or crash entirely. This type of flaw typically falls under the category of availability attacks, where the primary objective is to disrupt normal system operations rather than to gain unauthorized access or escalate privileges. The attack surface is particularly concerning given that SMB utilities are commonly used for file sharing, printer services, and network resource access, making any disruption potentially widespread across networked environments.
The operational impact of this vulnerability extends beyond simple service disruption, as it can lead to cascading failures within network infrastructure where Solaris systems serve as critical file servers or network endpoints. Organizations utilizing Solaris 11 for enterprise file sharing, backup operations, or network services may experience significant downtime when exploited, potentially affecting business continuity and data access for multiple users simultaneously. The remote nature of the attack means that threat actors can exploit this vulnerability from outside the network perimeter, eliminating the need for physical access or internal network presence, which significantly increases the attack surface and threat exposure.
Mitigation strategies for CVE-2016-0403 should prioritize immediate patch application from Oracle, as this represents the most effective defense against the specific vulnerability. Organizations should also implement network segmentation to limit access to SMB services, disable unnecessary SMB utilities where possible, and deploy intrusion detection systems to monitor for suspicious network activity related to SMB protocols. From a cybersecurity framework perspective, this vulnerability aligns with CWE-119, which addresses weaknesses in memory safety, and may also relate to ATT&CK technique T1499, which covers network disruption attacks. Regular security assessments and vulnerability scanning should be conducted to identify any unpatched systems within the environment, while incident response procedures should be updated to address potential availability disruptions caused by SMB-related exploits.