CVE-2020-37176 in Torrent 3GP Converter
Summary
by MITRE • 02/11/2026
Torrent 3GP Converter 1.51 contains a stack overflow vulnerability that allows attackers to execute arbitrary code by overwriting Structured Exception Handler (SEH) registers. Attackers can craft a malicious payload targeting the application's registration dialog to trigger code execution and open the calculator through carefully constructed buffer overflow techniques.
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Analysis
by VulDB Data Team • 02/11/2026
The vulnerability identified as CVE-2020-37176 resides within Torrent 3GP Converter version 1.51, representing a critical stack overflow condition that fundamentally compromises the application's memory integrity. This flaw manifests through improper input validation mechanisms within the application's registration dialog functionality, where maliciously crafted data can trigger unintended program behavior. The vulnerability specifically targets the Structured Exception Handler (SEH) mechanism, which serves as a critical component in Windows operating systems for managing exceptions and errors. When an attacker successfully exploits this weakness, they can overwrite SEH registers through carefully constructed buffer overflow techniques that exceed the allocated stack space, ultimately allowing for arbitrary code execution within the application's context. This represents a classic stack-based buffer overflow vulnerability that aligns with CWE-121, which specifically addresses stack-based buffer overflow conditions where insufficient bounds checking permits data to overwrite adjacent memory locations including exception handlers.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with the capability to manipulate the application's execution flow and potentially elevate privileges. The exploitation technique leverages the SEH overwrite mechanism to redirect program control flow, enabling attackers to execute arbitrary instructions including launching the calculator application as demonstrated in the attack vector. This type of vulnerability falls under the ATT&CK framework's technique T1059, which covers command and scripting interpreter, as attackers can leverage the compromised application to execute malicious commands. The vulnerability's exploitation requires minimal user interaction since it can be triggered through the registration dialog, making it particularly dangerous in environments where users may be prompted to enter registration information. The stack overflow occurs when the application fails to properly validate input length during registration processing, allowing attackers to craft payloads that exceed buffer boundaries and overwrite critical memory segments including the SEH chain.
Mitigation strategies for CVE-2020-37176 must address both the immediate vulnerability and broader security posture of affected systems. The primary recommendation involves applying the vendor-supplied patch or upgrading to a newer version of Torrent 3GP Converter that resolves the buffer overflow condition through proper input validation and bounds checking mechanisms. Organizations should implement application whitelisting controls to restrict execution of untrusted binaries and establish network-based protections such as intrusion detection systems to monitor for exploitation attempts. The vulnerability demonstrates the importance of implementing secure coding practices including stack canaries, address space layout randomization, and stack overflow detection mechanisms that are commonly referenced in industry standards like the OWASP Secure Coding Practices. Additionally, security teams should conduct thorough vulnerability assessments of similar applications that may exhibit comparable buffer overflow vulnerabilities, particularly those handling user input through GUI dialogs. The exploitation of this vulnerability also highlights the necessity of regular security testing including fuzzing and static code analysis to identify potential buffer overflow conditions before they can be weaponized by adversaries. System administrators should also consider implementing behavioral monitoring solutions that can detect anomalous application behavior patterns consistent with SEH overwrite attacks, providing additional layers of defense against this class of exploit techniques.