CVE-2010-4443 in Solaris
Summary
by MITRE
Unspecified vulnerability in Oracle Solaris 10 and 11 Express allows local users to affect availability, related to Kernel/NFS.
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Analysis
by VulDB Data Team • 01/20/2025
The vulnerability identified as CVE-2010-4443 represents a significant security flaw within Oracle Solaris operating systems affecting both version 10 and 11 Express releases. This issue resides within the kernel component of the operating system and specifically relates to the Network File System implementation. The unspecified nature of the vulnerability indicates that the exact technical mechanism remains undisclosed, though the impact is clearly defined as affecting system availability. Such vulnerabilities in kernel components are particularly dangerous as they can potentially be exploited to cause system instability or complete system crashes, thereby compromising the availability aspect of the system security triad.
The technical flaw manifests within the NFS subsystem of the Solaris kernel, where local users can exploit this weakness to impact system availability. This suggests that the vulnerability does not require network access or remote exploitation capabilities, making it particularly concerning as it can be triggered by users who already have access to the system. The kernel-level nature of the vulnerability means that exploitation could potentially lead to privilege escalation or system-wide availability disruption. According to CWE classification, this vulnerability would likely fall under CWE-119 which encompasses improper restriction of operations within a limited context, and potentially CWE-122 which deals with insufficient synchronization, given the kernel context and potential for resource exhaustion.
The operational impact of this vulnerability extends beyond simple system crashes to encompass broader availability concerns that could affect business continuity and service delivery. Local users who exploit this vulnerability could cause denial of service conditions that might require system restarts or could potentially lead to more severe system instability. This type of vulnerability is particularly problematic in enterprise environments where Solaris systems may host critical applications or data services. The local exploitation requirement suggests that the vulnerability is less likely to be exploited by external attackers but still represents a significant risk from insider threats or compromised local accounts. Organizations using Solaris systems should consider the potential for this vulnerability to be leveraged as part of broader attack campaigns where initial access is gained through other means.
Mitigation strategies for CVE-2010-4443 should focus on applying the official Oracle security patches and updates as soon as they become available. System administrators should also implement monitoring solutions to detect unusual activity patterns 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 this type of vulnerability. Additionally, implementing proper system hardening practices including disabling unnecessary NFS services and ensuring that only authorized users have local system access can help reduce the risk exposure. Organizations should also consider implementing network segmentation to limit the potential impact of local privilege escalation or availability attacks. Regular vulnerability assessments and security audits should be conducted to identify similar kernel-level vulnerabilities that might exist in the system configuration. The ATT&CK framework would categorize this vulnerability under privilege escalation and denial of service tactics, with potential techniques involving kernel exploitation and resource exhaustion methods that could be used to disrupt system availability.