CVE-2018-25211 in Splitter
Summary
by MITRE • 03/26/2026
Allok Video Splitter 3.1.1217 contains a buffer overflow vulnerability that allows local attackers to cause a denial of service or execute arbitrary code by supplying an oversized string in the License Name field. Attackers can craft a malicious payload exceeding 780 bytes, paste it into the License Name registration field, and trigger the overflow when the Register button is clicked.
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Analysis
by VulDB Data Team • 03/26/2026
The vulnerability identified as CVE-2018-25211 resides within Allok Video Splitter version 3.1.1217, representing a critical buffer overflow flaw that fundamentally compromises the software's memory integrity. This issue manifests specifically when processing user input through the License Name registration field, creating a pathway for malicious exploitation that extends beyond simple denial of service to potential code execution. The vulnerability stems from inadequate input validation mechanisms that fail to properly sanitize or limit the length of strings entered by users, allowing attackers to bypass normal parameter constraints and overwrite adjacent memory segments.
The technical exploitation of this vulnerability follows a well-defined pattern where attackers construct a malicious payload exceeding 780 bytes and inject it into the License Name field. When the user clicks the Register button, the application processes this oversized input without proper bounds checking, leading to a classic stack-based buffer overflow condition. This memory corruption scenario creates opportunities for attackers to manipulate program execution flow, potentially redirecting control to malicious code injected within the overflowed buffer space. The vulnerability's local nature indicates that exploitation requires physical or remote access to the target system, though the privilege escalation potential remains significant given the software's execution context.
The operational impact of this vulnerability extends beyond immediate system instability to encompass broader security implications for users and organizations relying on Allok Video Splitter for video processing tasks. A successful exploitation could result in complete system compromise, allowing attackers to execute arbitrary code with the privileges of the affected application, which typically runs with elevated permissions due to its video processing capabilities. The denial of service aspect alone represents a substantial risk to business continuity, as the application could become unresponsive or crash during critical video editing operations, potentially leading to data loss or workflow disruptions in professional environments where such tools are essential for content creation processes.
Mitigation strategies for CVE-2018-25211 should prioritize immediate software updates from the vendor, as this vulnerability represents a known issue that has likely been addressed in subsequent releases. System administrators should implement input validation controls at multiple layers, including application-level sanitization of user inputs and network-based filtering to prevent oversized payloads from reaching vulnerable applications. The vulnerability aligns with CWE-121, which specifically addresses stack-based buffer overflow conditions, and demonstrates characteristics consistent with techniques documented in the ATT&CK framework under T1059 for execution through command and scripting interfaces. Organizations should also consider implementing application whitelisting policies to restrict execution of untrusted software and maintain comprehensive monitoring for unusual registration activity that might indicate exploitation attempts. Given the local privilege requirements and the nature of the vulnerability, network segmentation and least privilege access controls become critical defensive measures to limit potential lateral movement if exploitation occurs.