CVE-2007-5070 in EasyMail MessagePrinter Object
Summary
by MITRE
Heap-based buffer overflow in the EasyMailMessagePrinter ActiveX control in emprint.DLL 6.0.1.0 in the Quiksoft EasyMail MessagePrinter Object allows remote attackers to execute arbitrary code via a long string in the first argument to the SetFont method.
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Analysis
by VulDB Data Team • 10/07/2024
The CVE-2007-5070 vulnerability represents a critical heap-based buffer overflow flaw within the EasyMailMessagePrinter ActiveX control component. This vulnerability exists in the emprint.DLL library version 6.0.1.0 distributed by Quiksoft, specifically affecting the MessagePrinter Object implementation. The flaw manifests when processing input data through the SetFont method, where the application fails to properly validate the length of the first argument parameter. This insufficient input validation creates an exploitable condition where an attacker can supply a maliciously crafted string that exceeds the allocated buffer size, leading to memory corruption and potential arbitrary code execution.
The technical nature of this vulnerability aligns with CWE-121, which describes heap-based buffer overflow conditions where insufficient boundary checking allows attackers to overwrite adjacent memory locations. The ActiveX control architecture inherently presents security risks due to its browser integration capabilities and the elevated privileges often granted to such components. When the SetFont method receives an excessively long string argument, the buffer allocated for string storage becomes overflowed, potentially overwriting critical memory segments including return addresses, function pointers, or other control data structures. This memory corruption can be leveraged by attackers to redirect execution flow and inject malicious code into the target process.
The operational impact of this vulnerability extends beyond simple code execution, as it represents a serious security compromise that can be exploited remotely without requiring user interaction or authentication. Attackers can craft malicious web pages or email content that, when processed by vulnerable systems, automatically triggers the buffer overflow condition. The attack surface includes any system running the affected ActiveX control, particularly those with internet-facing applications or email clients that may process untrusted content. This vulnerability directly maps to ATT&CK technique T1190, which covers exploitation of remote services, and T1059, covering command and scripting interpreters, as successful exploitation would enable attackers to execute arbitrary commands on compromised systems.
Mitigation strategies for CVE-2007-5070 should focus on immediate remediation through software updates from Quiksoft, as the vendor would need to implement proper bounds checking in the SetFont method implementation. Organizations should consider disabling ActiveX controls in browser environments where possible, particularly when these controls are not essential for business operations. Network-level protections such as application firewalls and intrusion prevention systems can help detect and block exploitation attempts. Additionally, system hardening measures including address space layout randomization and data execution prevention should be implemented to reduce the effectiveness of potential exploitation attempts. Regular security assessments and vulnerability scanning should be conducted to identify other potentially vulnerable ActiveX controls or legacy components within the environment that may present similar security risks.