CVE-2007-2508 in ServerProtect EarthAgent
Summary
by MITRE
Multiple stack-based buffer overflows in Trend Micro ServerProtect 5.58 before Security Patch 2 Build 1174 allow remote attackers to execute arbitrary code via crafted data to (1) TCP port 5168, which triggers an overflow in the CAgRpcClient::CreateBinding function in the AgRpcCln.dll library in SpntSvc.exe; or (2) TCP port 3628, which triggers an overflow in EarthAgent.exe. NOTE: both issues are reachable via TmRpcSrv.dll.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 01/13/2025
The vulnerability described in CVE-2007-2508 represents a critical stack-based buffer overflow in Trend Micro ServerProtect 5.58 before Security Patch 2 Build 1174 that exposes multiple attack vectors through remote code execution capabilities. This vulnerability affects the core networking components of the ServerProtect service, specifically targeting two distinct TCP ports that serve different functions within the system architecture. The flaw stems from improper input validation in the AgRpcCln.dll library within SpntSvc.exe and the EarthAgent.exe component, creating exploitable conditions that can be leveraged by remote attackers to gain unauthorized system access. The vulnerability is particularly concerning as it demonstrates how multiple attack surfaces within a single security product can be simultaneously compromised through different network entry points.
The technical implementation of this vulnerability occurs through the CAgRpcClient::CreateBinding function in AgRpcCln.dll and the EarthAgent.exe process, both of which are components of the Trend Micro ServerProtect service architecture. When malicious data is sent to TCP port 5168, the system fails to properly validate the incoming buffer size, allowing an attacker to overflow the stack and potentially overwrite critical memory locations including return addresses. Similarly, when data is sent to TCP port 3628, the EarthAgent.exe process experiences the same stack-based buffer overflow condition. Both attack vectors ultimately utilize the TmRpcSrv.dll library as a common pathway, indicating a fundamental flaw in the RPC (Remote Procedure Call) handling mechanism that governs communication between the client and server components of the security solution. This architectural weakness demonstrates poor input sanitization and memory management practices that are classified under CWE-121 Stack-based Buffer Overflow.
The operational impact of CVE-2007-2508 extends beyond simple remote code execution to encompass complete system compromise and potential lateral movement within network environments. Attackers who successfully exploit these vulnerabilities can gain arbitrary code execution privileges on systems running vulnerable versions of ServerProtect, potentially leading to full system takeover, data exfiltration, and establishment of persistent backdoors. The dual attack surface increases the likelihood of successful exploitation as attackers can target either TCP port 5168 or 3628 depending on network conditions and firewall configurations. This vulnerability particularly affects enterprise environments where ServerProtect is deployed as a network security solution, as compromised systems can serve as launching points for broader attacks against network infrastructure. The vulnerability's remote nature eliminates the need for physical access or local network presence, making it a high-value target for attackers seeking to compromise security infrastructure.
Mitigation strategies for CVE-2007-2508 require immediate patch deployment to address the specific buffer overflow conditions in both AgRpcCln.dll and EarthAgent.exe components. Organizations should implement network segmentation and firewall rules to restrict access to TCP ports 5168 and 3628, particularly if these services are not essential for business operations. The recommended approach includes applying Security Patch 2 Build 1174 or later versions that specifically address these buffer overflow conditions in the Trend Micro ServerProtect product line. Additionally, network monitoring should be enhanced to detect anomalous traffic patterns on these ports, and system administrators should conduct thorough vulnerability assessments to identify any other potentially vulnerable components within the ServerProtect ecosystem. Security teams should also consider implementing intrusion detection systems that can identify exploitation attempts targeting these specific RPC-based attack vectors. The ATT&CK framework categorizes this vulnerability under T1210 Exploitation of Remote Services, highlighting the need for proper service hardening and network access controls to prevent unauthorized remote access to vulnerable components.