CVE-2010-2393 in OpenSolaris
Summary
by MITRE
Unspecified vulnerability in Oracle Solaris 10 and OpenSolaris allows local users to affect availability, related to RPC.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 01/25/2025
The vulnerability identified as CVE-2010-2393 represents a critical weakness in Oracle Solaris 10 and OpenSolaris operating systems that resides within the Remote Procedure Call (RPC) subsystem. This unspecified flaw specifically targets the local user attack surface, enabling malicious actors with local system access to compromise system availability through RPC mechanisms. The RPC service architecture in these operating systems provides a framework for distributed computing where programs can execute procedures on remote machines, making it a crucial component for system functionality and network operations.
The technical nature of this vulnerability stems from inadequate input validation or buffer handling within the RPC implementation that processes local requests. Attackers with local privileges can exploit this weakness to cause system instability, service disruption, or complete system unavailability. The RPC subsystem in Solaris handles various services including NFS, NIS, and other network-based functionalities that rely on remote procedure calls for operation. When a local user crafts malicious input or exploits the RPC processing logic, the system may experience crashes, hangs, or denial of service conditions that affect availability of critical system services.
From an operational impact perspective, this vulnerability presents significant risk to enterprise environments that rely on Solaris systems for mission-critical operations. Local privilege escalation to system compromise allows attackers to disrupt services that may be essential for business continuity, particularly in environments where RPC-based services are heavily utilized for file sharing, network information services, and distributed application execution. The availability impact can range from temporary service disruption to complete system outages, depending on the specific exploitation method and the criticality of services affected.
Security professionals should implement immediate mitigations including applying Oracle's security patches and updates released for this vulnerability, as well as implementing network segmentation to limit local access privileges. System administrators should conduct thorough vulnerability assessments to identify all instances of affected Solaris versions and ensure proper access controls are enforced. The vulnerability aligns with CWE-121, which addresses buffer overflow conditions in the context of local privilege escalation, and may map to ATT&CK techniques such as privilege escalation through local exploitation. Organizations should also consider implementing monitoring solutions to detect anomalous RPC activity that could indicate exploitation attempts, particularly focusing on local user behavior patterns that deviate from normal system usage. Regular security audits and system hardening procedures should be implemented to reduce the attack surface and prevent unauthorized local access that could lead to exploitation of this availability-focused vulnerability.