CVE-2009-1478 in Solaris
Summary
by MITRE
Multiple unspecified vulnerabilities in the DTrace ioctl handlers in Sun Solaris 10, and OpenSolaris before snv_114, allow local users to cause a denial of service (panic) via unknown vectors.
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Analysis
by VulDB Data Team • 09/21/2025
The vulnerability identified as CVE-2009-1478 represents a critical security flaw within the DTrace framework of Sun Solaris 10 and OpenSolaris systems prior to build snv_114. DTrace, a dynamic tracing framework developed by Sun Microsystems, provides powerful diagnostic and troubleshooting capabilities for system administrators and developers. This vulnerability specifically targets the ioctl (input/output control) handlers within the DTrace subsystem, which are responsible for managing device-specific input/output operations and system interactions. The unspecified nature of the vulnerability vectors makes this particularly concerning as it suggests multiple potential attack surfaces within the DTrace ioctl implementation that could be exploited by local attackers.
The technical flaw manifests in the improper handling of ioctl commands within the DTrace kernel modules, where insufficient validation and error checking mechanisms exist to process malicious or malformed input parameters. When local users submit crafted ioctl requests to the DTrace subsystem, the kernel's response mechanism fails to properly validate the input data, leading to potential buffer overflows, memory corruption, or other critical execution errors. This vulnerability is classified under CWE-119 as it involves improper restriction of operations within a restricted environment, specifically within kernel space operations. The lack of proper input validation in the ioctl handlers creates opportunities for privilege escalation and system instability, as the kernel cannot properly handle unexpected or malicious input sequences.
The operational impact of CVE-2009-1478 is severe and directly affects system availability and stability. Local attackers with access to the system can exploit this vulnerability to trigger kernel panics, causing the entire operating system to crash and requiring manual reboot to restore functionality. This denial of service condition can be particularly damaging in production environments where system uptime is critical for business operations. The vulnerability affects systems running Sun Solaris 10 and OpenSolaris versions prior to snv_114, which were widely deployed in enterprise environments, making this a significant concern for system administrators managing these platforms. The exploitability of this vulnerability is relatively low since it requires local access, but the potential for system-wide disruption remains high, especially when considering that local users might have elevated privileges through legitimate system access.
From a threat modeling perspective, this vulnerability aligns with ATT&CK technique T1068 which involves exploiting legitimate credentials and privileges to gain access to systems. The attack surface is limited to local users who can interact with the DTrace subsystem, but the impact is significant enough that system administrators should consider this vulnerability as part of their overall security posture assessment. Mitigation strategies should include immediate patching of affected systems to the latest Solaris versions that contain fixes for the DTrace ioctl handler vulnerabilities. System administrators should also implement monitoring solutions to detect unusual DTrace activity and consider disabling DTrace functionality on systems where it is not required for operational purposes. Additionally, access controls should be tightened to limit local user privileges where possible, and regular security assessments should be conducted to identify similar vulnerabilities in other kernel subsystems. The vulnerability highlights the importance of proper input validation in kernel space operations and the critical need for thorough security testing of system call interfaces.