CVE-2004-1346 in Solaris
Summary
by MITRE
The Sun Solaris Volume Manager (SVM) on Solaris 9 allows local users to cause a denial of service (kernel panic) via a malformed probe request to the SVM.
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Analysis
by VulDB Data Team • 12/16/2024
The Sun Solaris Volume Manager represents a critical component within the Solaris operating system that manages disk volumes and storage configurations for enterprise environments. This vulnerability specifically targets the kernel-level handling of probe requests within the SVM subsystem, creating a pathway for local attackers to trigger system instability. The flaw exists in the way the kernel processes malformed probe requests, which are typically used to discover and enumerate storage devices within the system. When a specially crafted malformed request is sent to the SVM, it causes the kernel to enter an undefined state that results in a complete system crash or kernel panic. The vulnerability affects Solaris 9 systems where the SVM is actively running, making it particularly concerning for production environments that rely on stable storage management capabilities.
The technical implementation of this vulnerability resides in the kernel's input validation mechanisms within the SVM driver code. When a probe request is received, the system performs validation checks on the request parameters to determine device compatibility and configuration. However, the validation process fails to properly handle malformed data structures or out-of-bounds values, leading to memory corruption or invalid pointer dereferences within kernel space. This type of flaw falls under the Common Weakness Enumeration category of improper input validation, specifically CWE-20, which encompasses issues where input is not properly validated before being processed. The vulnerability demonstrates a classic buffer overflow scenario where the kernel does not adequately check the bounds of incoming data, allowing malicious input to overwrite critical kernel memory structures. The attack vector requires local system access since the probe request must be sent from within the operating system, but this limitation does not mitigate the severity of the impact.
The operational impact of this vulnerability extends beyond simple system downtime, as it can compromise the entire storage infrastructure managed by SVM. A successful exploitation results in immediate kernel panics that require system reboot to recover, potentially leading to data loss or corruption if transactions were in progress at the time of the crash. For enterprise environments running Solaris 9 with SVM configured, this vulnerability represents a significant risk to service availability and business continuity. The denial of service condition affects all applications and services that depend on the storage subsystem, potentially cascading into broader system failures. Organizations with high availability requirements or those operating in regulated environments face particular risk since the system instability could violate compliance requirements for uptime and data integrity. The vulnerability also demonstrates the importance of kernel-level security testing and the potential for seemingly benign storage management functions to become attack vectors when input validation is insufficient.
Mitigation strategies for this vulnerability involve multiple layers of defensive measures that address both immediate system protection and long-term security hardening. The most effective immediate solution is applying the official Oracle Solaris patch that corrects the input validation logic within the SVM probe handling code. System administrators should also implement monitoring solutions to detect unusual probe request patterns that might indicate exploitation attempts. Access controls and privilege separation can reduce the attack surface by limiting local user access to storage management functions. Network segmentation and least privilege principles should be applied to minimize the potential impact of compromised local accounts. From a compliance perspective, organizations should document their remediation efforts and verify that the patch has been successfully applied across all affected systems. The vulnerability highlights the importance of maintaining up-to-date security patches and demonstrates how even legacy systems require ongoing security maintenance. Organizations should also consider implementing intrusion detection systems that can identify anomalous probe request behavior and alert security teams to potential exploitation attempts. This vulnerability serves as a reminder of the critical need for proper input validation in kernel space code and the potential consequences when such validation is absent.