CVE-2019-25464: InputMapper Buffer Overflow Vulnerability

CVE-2019-25464 Overview

CVE-2019-25464 is a buffer overflow vulnerability in InputMapper version 1.6.10 that allows local attackers to crash the application by entering an excessively long string in the username field. This vulnerability enables denial of service attacks when an attacker copies a large payload into the username field and double-clicks to process it, causing the application to crash.

Critical Impact

Local attackers can crash InputMapper 1.6.10 through buffer overflow in the username field, resulting in denial of service and disruption of controller mapping functionality.

Affected Products

• InputMapper 1.6.10

Discovery Timeline

• 2026-03-11 - CVE CVE-2019-25464 published to NVD
• 2026-03-12 - Last updated in NVD database

Technical Details for CVE-2019-25464

Vulnerability Analysis

This vulnerability is classified under CWE-770 (Allocation of Resources Without Limits or Throttling). The buffer overflow condition occurs in the username field of InputMapper, where the application fails to properly validate or limit the length of user-supplied input before processing it. When an attacker supplies an excessively long string, the application attempts to allocate memory or copy data beyond the bounds of the allocated buffer, leading to memory corruption and subsequent application crash.

The local attack vector requires user interaction to trigger the vulnerability. An attacker with local access must copy a large payload into the username field and then double-click to initiate processing. While this limits the scope of exploitation compared to remote vulnerabilities, it still represents a significant denial of service risk in environments where InputMapper is used for controller configuration.

Root Cause

The root cause of this vulnerability is improper input validation in the username field handling code. InputMapper 1.6.10 does not implement adequate boundary checks on the length of strings entered into the username field, allowing unbounded resource allocation that exhausts available memory or overwrites adjacent memory regions. This failure to enforce input length restrictions is a common programming error that can lead to buffer overflow conditions.

Attack Vector

The attack requires local access to the system running InputMapper 1.6.10. The exploitation process involves:

1. The attacker gains local access to a machine with InputMapper installed
2. The attacker crafts an excessively long string payload
3. The attacker copies the payload into the username field within the application
4. Upon double-clicking to process the input, the application attempts to handle the oversized string
5. The buffer overflow occurs, causing memory corruption and application crash

The vulnerability does not require elevated privileges to exploit, but does require active user interaction with the application interface. This limits the attack surface but makes it viable for insider threats or social engineering scenarios where a user might be tricked into entering a malicious payload.

Detection Methods for CVE-2019-25464

Indicators of Compromise

• Unexpected InputMapper application crashes or termination events
• Application error logs showing memory allocation failures or access violations
• Presence of unusually long strings in InputMapper configuration files or logs
• System event logs indicating application faults in InputMapper.exe

Detection Strategies

• Monitor Windows application event logs for InputMapper crash events with exception codes related to buffer overflows or access violations
• Deploy endpoint detection rules to identify anomalous memory consumption patterns by InputMapper processes
• Implement application whitelisting to ensure only authorized versions of InputMapper are executed
• Use SentinelOne Singularity to detect exploitation attempts through behavioral analysis of application crashes

Monitoring Recommendations

• Configure crash dump collection for InputMapper to enable forensic analysis of exploitation attempts
• Enable verbose logging for InputMapper if available to capture input field values
• Monitor process stability metrics for InputMapper across the enterprise
• Establish baseline behavior for InputMapper resource usage to detect anomalies

How to Mitigate CVE-2019-25464

Immediate Actions Required

• Restrict access to systems running InputMapper 1.6.10 to trusted users only
• Consider removing or disabling InputMapper if not required for business operations
• Implement application control policies to limit execution of vulnerable software
• Educate users about the risks of entering untrusted or unusually long input into application fields

Patch Information

No vendor patch information is currently available in the CVE data. InputMapper appears to be discontinued software, as indicated by the archived project website. Organizations should consider migrating to alternative controller mapping solutions that are actively maintained and receive security updates.

Additional technical details and exploit information can be found in the Exploit-DB #47406 entry and the VulnCheck Advisory.

Workarounds

• Replace InputMapper 1.6.10 with actively maintained alternative controller mapping software
• Implement strict input validation at the network or application layer if InputMapper must remain in use
• Run InputMapper in a sandboxed or isolated environment to contain potential denial of service impacts
• Apply least privilege principles to limit which users can access systems running InputMapper