CVE-2009-0686 in Internet Security
Summary
by MITRE
The TrendMicro Activity Monitor Module (tmactmon.sys) 2.52.0.1002 in Trend Micro Internet Pro 2008 and 2009, and Security Pro 2008 and 2009, allows local users to gain privileges via a crafted IRP in a METHOD_NEITHER IOCTL request to \Device\tmactmon that overwrites memory.
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Analysis
by VulDB Data Team • 11/25/2024
The vulnerability identified as CVE-2009-0686 represents a critical privilege escalation flaw within the TrendMicro Activity Monitor Module component of several Trend Micro security products. This issue affects versions 2.52.0.1002 of the tmactmon.sys driver found in Trend Micro Internet Pro 2008 and 2009, as well as Security Pro 2008 and 2009 products. The flaw resides in how the driver handles input/output control requests, specifically when processing METHOD_NEITHER IOCTL operations directed at the \Device\mactmon device interface.
The technical implementation of this vulnerability stems from inadequate input validation and memory management within the kernel-mode driver. When a local user crafts a specially constructed IRP (I/O Request Packet) with METHOD_NEITHER IOCTL request to the mactmon device, the driver fails to properly validate the input parameters before executing memory operations. This allows an attacker to overwrite arbitrary memory locations within the driver's address space, potentially leading to arbitrary code execution with kernel-level privileges. The vulnerability is classified under CWE-121 as a stack-based buffer overflow, though the specific mechanism involves heap corruption through improper memory handling in kernel space. The attack vector requires local system access, making it a local privilege escalation vulnerability that can be exploited by any user account on the system.
The operational impact of this vulnerability is severe as it enables local users to escalate their privileges from standard user level to system administrator level without requiring any special authentication or network access. Once exploited, the attacker gains complete control over the affected system, potentially allowing for persistent backdoor installation, data exfiltration, system reconnaissance, and further network infiltration. The vulnerability affects multiple Trend Micro products simultaneously, amplifying its potential impact across enterprise environments where these security solutions are widely deployed. The kernel-mode exploitation means that traditional user-mode defenses such as application whitelisting or antivirus solutions may be bypassed entirely, as the attack operates at the operating system level. This type of vulnerability is particularly concerning in enterprise environments where security software is often installed with elevated privileges and where the compromise of such components can lead to widespread system compromise.
Mitigation strategies for this vulnerability should include immediate patching of affected Trend Micro products to version 2.52.0.1003 or later, which contains the necessary fixes to address the memory handling issues in the tmactmon.sys driver. System administrators should also implement the principle of least privilege by ensuring that Trend Micro services run with minimal required permissions and consider disabling unnecessary kernel-mode components where possible. Network segmentation and monitoring should be enhanced to detect unusual privilege escalation activities, and endpoint detection and response solutions should be configured to monitor for suspicious driver activity or memory modification patterns. The vulnerability aligns with ATT&CK technique T1068 which covers privilege escalation through local exploits, and T1059 which involves command and script interpreters. Organizations should also consider implementing kernel-mode driver signature enforcement and monitoring for unauthorized kernel-level modifications to prevent exploitation of similar vulnerabilities. Regular vulnerability assessments and security audits should be conducted to identify and remediate other potential kernel-mode attack vectors within the security infrastructure.