CVE-2006-6308 in Livestate Agent
Summary
by MITRE
** DISPUTED ** Symantec LiveState 7.1 Agent for Windows allows local users to gain privileges by stopping the shstart.exe process and open "Web Self-Service" from the system tray icon, which will open a browser window running with elevated privileges. NOTE: several third-party researchers have noted that administrator privileges may be necessary to terminate shstart.exe. If this is the case, then no privilege escalation occurs, and this is not a vulnerability.
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Analysis
by VulDB Data Team • 08/08/2024
The vulnerability described in CVE-2006-6308 relates to Symantec LiveState 7.1 Agent for Windows, a system management and recovery tool that provides automated backup and recovery capabilities. This particular issue involves a potential privilege escalation vector that could be exploited by local users through manipulation of the agent's service processes and user interface components. The vulnerability exists within the Windows operating system environment where the agent's components interact with the system tray and browser execution contexts. The reported flaw suggests that under certain conditions, a local attacker could potentially execute elevated privileges through a specific sequence of actions involving service manipulation and user interface interaction. This represents a significant security concern as it could allow unauthorized users to gain higher system privileges than intended by the application's design and security model. The vulnerability's classification as disputed reflects the ongoing debate among security researchers about the actual exploitability conditions and the necessity of administrator privileges for successful exploitation.
The technical flaw stems from the improper handling of privilege contexts within the Symantec LiveState agent implementation. When users interact with the "Web Self-Service" feature through the system tray icon, the application launches a browser window that operates with elevated privileges. This occurs because the shstart.exe process, which is responsible for starting the agent services, can be stopped by local users. The vulnerability manifests when the agent's service management logic fails to properly validate or restrict the conditions under which elevated browser processes can be initiated. The system's privilege separation mechanisms appear to be insufficiently enforced, allowing the browser window to inherit elevated privileges even when the initiating process has been terminated. This architectural weakness creates a potential attack surface where local users can manipulate the agent's state to trigger elevated privilege execution contexts. The flaw aligns with CWE-276, which addresses improper privilege management in software systems, and demonstrates how service interaction patterns can lead to unintended privilege escalation scenarios.
The operational impact of this vulnerability is significant for organizations using Symantec LiveState 7.1 Agent for Windows, as it represents a potential pathway for local attackers to escalate their privileges within the system. While the vulnerability may require specific conditions to be exploited successfully, the potential for privilege escalation means that any local user with access to the system could theoretically attempt to exploit this flaw. The implications extend beyond simple privilege escalation to include potential data compromise, system integrity violations, and unauthorized access to sensitive system resources. Organizations relying on this agent for backup and recovery operations could face serious security implications if this vulnerability is successfully exploited, as it could allow attackers to bypass normal access controls and potentially gain administrative access to the system. The vulnerability also highlights the importance of proper service management and privilege separation in enterprise security tools, as the agent's design may not adequately enforce security boundaries between different privilege levels. This scenario demonstrates how seemingly benign user interface interactions can expose critical security weaknesses in system management software.
The disputed nature of this vulnerability stems from conflicting reports about whether administrator privileges are actually required to terminate the shstart.exe process. This uncertainty directly impacts the classification and severity assessment of the vulnerability, as it determines whether the exploit is truly accessible to local users without elevated privileges. If administrator privileges are indeed necessary to stop the service, then the vulnerability may not represent a true privilege escalation vector, as the attacker would already possess elevated privileges. However, if the service can be stopped without administrator privileges, then the vulnerability represents a legitimate security concern. This ambiguity reflects the complexity of analyzing security vulnerabilities in enterprise software environments where service interactions, privilege contexts, and user permissions can create multiple attack vectors. The situation also underscores the importance of thorough validation of security research findings, particularly when dealing with complex software interactions that may have multiple exploitation paths. Organizations should carefully evaluate their specific environments and configurations to determine whether this vulnerability poses a real threat to their systems.
Recommended mitigations for this vulnerability should focus on proper privilege management and service access controls within the Symantec LiveState agent environment. System administrators should ensure that appropriate access controls are implemented to prevent unauthorized users from stopping critical service processes. The agent configuration should be reviewed to verify that elevated privilege contexts are only granted when absolutely necessary and under proper authorization controls. Regular security assessments of enterprise management tools should include evaluation of privilege escalation vectors and service interaction patterns. Additionally, organizations should consider implementing monitoring solutions that can detect unauthorized service manipulation attempts and alert security teams to potential exploitation attempts. The vulnerability also emphasizes the importance of keeping enterprise security tools updated with the latest patches and security fixes. While the specific exploit conditions remain disputed, the potential for privilege escalation in system management tools requires careful attention to access controls and privilege separation mechanisms. Organizations should also consider implementing principle of least privilege concepts for all system management applications to minimize potential impact from similar vulnerabilities in the future.