CVE-2007-6507 in ServerProtect
Summary
by MITRE
SpntSvc.exe daemon in Trend Micro ServerProtect 5.58 for Windows, before Security Patch 4, exposes unspecified dangerous sub-functions from StRpcSrv.dll in the DCE/RPC interface, which allows remote attackers to obtain "full file system access" and execute arbitrary code.
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Analysis
by VulDB Data Team • 08/02/2019
The vulnerability identified as CVE-2007-6507 affects Trend Micro ServerProtect 5.58 for Windows prior to Security Patch 4, specifically targeting the SpntSvc.exe daemon component. This daemon operates as a critical service responsible for managing security policies and protecting network resources within enterprise environments. The flaw resides within the Distributed Computing Environment/Remote Procedure Call (DCE/RPC) interface implementation, where the SpntSvc.exe service fails to properly validate incoming requests to the StRpcSrv.dll library. The vulnerability represents a classic example of improper input validation and inadequate access control mechanisms, creating a dangerous attack surface that exposes privileged functionality to unauthenticated remote actors.
The technical exploitation of this vulnerability occurs through the DCE/RPC interface where the StRpcSrv.dll component exposes dangerous sub-functions that should remain restricted to authorized administrative access. Attackers can remotely connect to the vulnerable service and leverage these exposed RPC endpoints to execute arbitrary code with elevated privileges. The vulnerability allows for complete file system access, enabling attackers to read, modify, or delete critical system files and data. This represents a severe privilege escalation flaw that can lead to complete system compromise. The vulnerability is classified under CWE-284, which deals with improper access control, and falls under the ATT&CK technique T1068 for local privilege escalation. The DCE/RPC interface provides an attack vector that bypasses normal authentication mechanisms, allowing remote code execution without requiring valid credentials.
The operational impact of this vulnerability extends beyond immediate system compromise to encompass significant business continuity and data security implications. Organizations running vulnerable ServerProtect installations face potential data breaches, system infiltration, and complete loss of control over protected network resources. The vulnerability affects enterprise environments where ServerProtect is deployed as a primary security solution, making it particularly dangerous for organizations that rely on this software for network protection. The exposure of full file system access capabilities means attackers can manipulate system configurations, install backdoors, or exfiltrate sensitive information. This vulnerability can serve as an initial access point for more sophisticated attacks, potentially leading to lateral movement within networks and establishment of persistent threats. The risk is compounded by the fact that the vulnerability affects the core daemon process, making it difficult to isolate or contain the compromise without complete system reinstallation.
Mitigation strategies for this vulnerability require immediate application of Trend Micro Security Patch 4, which addresses the exposed RPC endpoints and implements proper access controls. Organizations should also implement network segmentation to limit access to the ServerProtect service ports, typically associated with DCE/RPC communication. Network monitoring should be enhanced to detect unusual RPC traffic patterns that might indicate exploitation attempts. System administrators should conduct comprehensive vulnerability assessments to identify all systems running affected ServerProtect versions and ensure proper patch management procedures are in place. The remediation process should include disabling unnecessary RPC services and implementing strict firewall rules that restrict access to the vulnerable service to only trusted administrative hosts. Additionally, organizations should consider implementing intrusion detection systems that can identify exploitation attempts targeting DCE/RPC interfaces, and establish incident response procedures specifically designed to handle privilege escalation vulnerabilities in security software components.