CVE-2007-2238 in Whale Communication IAG
Summary
by MITRE
Multiple stack-based buffer overflows in the Whale Client Components ActiveX control (WhlMgr.dll), as used in Microsoft Intelligent Application Gateway (IAG) before 3.7 SP2, allow remote attackers to execute arbitrary code via long arguments to the (1) CheckForUpdates or (2) UpdateComponents methods.
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Analysis
by VulDB Data Team • 06/08/2025
The vulnerability identified as CVE-2007-2238 represents a critical stack-based buffer overflow flaw within the Whale Client Components ActiveX control component of Microsoft Intelligent Application Gateway software. This vulnerability specifically affects versions of IAG prior to 3.7 Service Pack 2 and manifests through improper input validation within the WhlMgr.dll library. The flaw exists in two distinct methods of the ActiveX control: CheckForUpdates and UpdateComponents, which are designed to facilitate software update processes but become attack vectors due to insufficient boundary checking mechanisms.
The technical implementation of this vulnerability stems from the absence of proper input length validation within the targeted ActiveX methods. When remote attackers provide excessively long arguments to either CheckForUpdates or UpdateComponents functions, the buffer overflow occurs in the stack memory allocation. This type of vulnerability falls under CWE-121 stack-based buffer overflow classification, where the attacker can overwrite adjacent memory locations including return addresses and control flow information. The ActiveX control's design fails to implement bounds checking or input sanitization, allowing maliciously crafted input parameters to exceed allocated buffer space and corrupt the program execution environment.
The operational impact of this vulnerability extends beyond simple code execution, as it enables remote attackers to gain complete control over affected systems. The attack vector operates through web-based delivery mechanisms since ActiveX controls are typically invoked through internet browsers, making exploitation possible without local system access. Successful exploitation could result in arbitrary code execution with the privileges of the affected user, potentially leading to full system compromise, data exfiltration, or establishment of persistent backdoors. The vulnerability particularly affects enterprise environments using Microsoft IAG for application gateway services, where attackers could leverage this flaw to bypass security controls and access internal network resources.
Organizations should implement immediate mitigations including patching to Microsoft IAG 3.7 SP2 or later versions where the buffer overflow issues have been resolved. System administrators should also consider disabling ActiveX controls in web browsers when not required for legitimate business applications, implementing network-based intrusion detection systems to monitor for exploitation attempts, and applying principle of least privilege configurations to limit potential damage from successful attacks. The vulnerability demonstrates the importance of proper input validation in component-based architectures and aligns with ATT&CK technique T1059.007 for command and scripting interpreter execution through ActiveX controls. Additionally, this vulnerability exemplifies the broader security challenges associated with legacy ActiveX technologies and highlights the necessity for comprehensive vulnerability management programs that address both known and emerging threats in enterprise application environments.