CVE-2013-5701 in Server Center
Summary
by MITRE
Multiple untrusted search path vulnerabilities in (1) Watchguard Log Collector (wlcollector.exe) and (2) Watchguard WebBlocker Server (wbserver.exe) in WatchGuard Server Center 11.7.4, 11.7.3, and possibly earlier allow local users to gain privileges via a Trojan horse wgpr.dll file in the application s bin directory.
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Analysis
by VulDB Data Team • 06/09/2025
The vulnerability identified as CVE-2013-5701 represents a critical privilege escalation issue affecting WatchGuard Server Center components, specifically targeting the Watchguard Log Collector and Watchguard WebBlocker Server applications. This flaw manifests through untrusted search path vulnerabilities that exploit the way these applications resolve library dependencies during execution. The vulnerability affects versions 11.7.4 and 11.7.3 of WatchGuard Server Center, with potential impacts extending to earlier releases, making it a significant concern for organizations maintaining legacy systems. The attack vector leverages a Trojan horse approach where a malicious wgpr.dll file is placed in the application's bin directory, exploiting the insecure library loading mechanism that does not properly validate the source or integrity of dynamically loaded components.
The technical nature of this vulnerability stems from improper handling of dynamic library loading processes within the affected applications. When wlcollector.exe and wbserver.exe execute, they search for required DLL libraries in their installation directories following a predictable search order that includes the application's bin directory. This insecure search path behavior allows local attackers to place malicious DLL files in the same directory as the vulnerable executables, causing the system to load and execute the attacker-controlled code with the privileges of the running process. This type of vulnerability maps directly to CWE-426 Untrusted Search Path, which specifically addresses the risks associated with applications that search for libraries in insecure locations. The flaw essentially creates a path traversal scenario where the application's legitimate library resolution process becomes a vector for malicious code execution, bypassing normal security controls that would otherwise prevent such unauthorized code injection.
The operational impact of this vulnerability extends beyond simple privilege escalation, creating a potential gateway for broader system compromise within WatchGuard environments. Local users who can write to the application's bin directory gain the ability to execute arbitrary code with elevated privileges, potentially allowing attackers to establish persistent access, escalate their privileges further, or extract sensitive data from the compromised systems. This vulnerability is particularly concerning in enterprise environments where these applications may run with elevated privileges to perform their monitoring and security functions. The impact is amplified when considering that these applications are typically installed with administrative rights, meaning that successful exploitation could provide attackers with full system control. From an attack chain perspective, this vulnerability aligns with ATT&CK technique T1068, which covers 'Exploitation for Privilege Escalation' and can serve as a foundational step for more sophisticated attacks.
Mitigation strategies for CVE-2013-5701 require immediate action to address the root cause of the insecure search path behavior. Organizations should prioritize applying the vendor-provided patches or updates that fix the library loading mechanisms in both wlcollector.exe and wbserver.exe applications. In environments where patching is not immediately possible, administrators should implement restrictive file permissions on the application bin directories to prevent unauthorized users from placing malicious DLL files. The principle of least privilege should be enforced by ensuring these applications run with minimal necessary permissions rather than elevated privileges. Additionally, implementing application whitelisting solutions and monitoring for suspicious DLL loading activities can provide additional layers of defense. System administrators should also conduct thorough audits of the WatchGuard Server Center installations to identify any other potentially vulnerable applications or services that might exhibit similar insecure search path behaviors. The vulnerability demonstrates the critical importance of secure coding practices and proper library loading mechanisms, particularly in security applications where elevated privileges are commonly employed.