CVE-2009-3183 in OpenSolaris
Summary
by MITRE
Heap-based buffer overflow in w in Sun Solaris 8 through 10, and OpenSolaris before snv_124, allows local users to gain privileges via unspecified vectors.
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Analysis
by VulDB Data Team • 02/27/2025
The vulnerability identified as CVE-2009-3183 represents a critical heap-based buffer overflow flaw affecting Sun Solaris operating systems across multiple versions including Solaris 8 through 10 and OpenSolaris prior to snv_124. This vulnerability resides within the w command which is commonly used for displaying system information and user activity. The heap-based nature of this buffer overflow indicates that the vulnerability occurs in dynamically allocated memory regions rather than stack-based buffers, making it particularly challenging to detect and exploit. The flaw allows local attackers who already have system access to escalate their privileges to higher levels, potentially gaining administrative control over the affected systems.
The technical implementation of this vulnerability stems from improper bounds checking within the w command's memory management routines. When processing certain input data or system information, the command fails to validate the size of data being copied into heap-allocated buffers, leading to memory corruption that can be exploited to overwrite critical memory locations. This type of vulnerability typically falls under CWE-121 which encompasses heap-based buffer overflow conditions where insufficient bounds checking allows attackers to write past the end of allocated heap memory regions. The exploitability of this vulnerability requires local system access, meaning an attacker must first establish a foothold on the target system before attempting privilege escalation.
The operational impact of CVE-2009-3183 extends beyond simple privilege escalation as it represents a significant security weakness in the core operating system utilities that administrators rely upon for system monitoring and management. Systems running affected versions of Solaris could be compromised by malicious insiders or attackers who have gained initial access through other means, potentially leading to complete system takeover. The vulnerability's presence in widely deployed operating system versions means that organizations using these platforms face substantial risk, particularly in enterprise environments where Solaris systems are commonly found. Attackers could leverage this vulnerability to establish persistent backdoors, modify system files, or access sensitive data, making it a critical concern for system administrators and security professionals.
Mitigation strategies for CVE-2009-3183 should prioritize immediate patching of affected systems with the vendor-provided security updates. Organizations should implement comprehensive monitoring to detect any suspicious activity that might indicate exploitation attempts, particularly around the execution of the w command or related system utilities. System hardening measures including restricting local user access, implementing least privilege principles, and regularly auditing system configurations can help reduce the attack surface. Additionally, security teams should consider deploying intrusion detection systems that can identify anomalous behavior patterns associated with privilege escalation attempts. The vulnerability's classification under ATT&CK technique T1068 suggests that exploitation would likely involve privilege escalation tactics, making defensive measures focused on access control and privilege management essential components of the overall security posture. Organizations should also conduct regular vulnerability assessments to identify similar heap-based buffer overflow conditions that may exist in other system components or third-party applications running on affected platforms.