CVE-2019-25667 Overview
CVE-2019-25667 is a local buffer overflow vulnerability in TaskInfo 8.2.0.280, a system information and process management utility. The vulnerability exists in the application's registration dialog, where improper input validation allows attackers to crash the application by supplying oversized input to the New User Name or New Serial Number textboxes in the Help menu's registration dialog, resulting in a denial of service condition.
Critical Impact
Local attackers can crash TaskInfo 8 by pasting excessively long strings into registration fields, causing application instability and denial of service.
Affected Products
- TaskInfo version 8.2.0.280
Discovery Timeline
- 2026-04-05 - CVE-2019-25667 published to NVD
- 2026-04-07 - Last updated in NVD database
Technical Details for CVE-2019-25667
Vulnerability Analysis
This vulnerability is classified as CWE-787 (Out-of-bounds Write), which occurs when the software writes data past the end of the intended buffer. In TaskInfo 8.2.0.280, the registration dialog fields fail to properly validate or limit the length of user-supplied input before copying it into fixed-size memory buffers.
When an attacker pastes an excessively long string into either the New User Name or New Serial Number textboxes within the Help menu's registration dialog, the application attempts to store this input in a buffer that cannot accommodate the oversized data. This results in memory corruption that causes the application to crash.
The local attack vector requires the attacker to have direct access to the system running TaskInfo. While this limits remote exploitation scenarios, it remains a concern in shared environments or where insider threats exist.
Root Cause
The root cause of this vulnerability is the absence of proper bounds checking on user-supplied input in the registration dialog. The application accepts arbitrarily long strings in the registration fields without validating their length against the allocated buffer size. When the input exceeds the buffer capacity, a classic buffer overflow occurs, overwriting adjacent memory and causing application instability.
Attack Vector
The attack requires local access to the system running TaskInfo 8.2.0.280. An attacker must navigate to the Help menu, access the registration dialog, and paste an excessively long string into either the New User Name or New Serial Number field. The buffer overflow is triggered upon input processing, causing the application to crash.
The vulnerability manifests in the registration field input handling routines. When oversized data is pasted into the textboxes, the application fails to truncate or reject the input, leading to memory corruption. For technical details regarding this vulnerability, refer to the Exploit-DB entry #46314 and the VulnCheck Advisory.
Detection Methods for CVE-2019-25667
Indicators of Compromise
- Unexpected TaskInfo application crashes, particularly following registration dialog interaction
- Windows Event Log entries indicating application crashes with exception codes related to access violations or buffer overruns
- Process dumps showing memory corruption patterns in the TaskInfo process
Detection Strategies
- Monitor for repeated TaskInfo process crashes using Windows Event Viewer or SIEM solutions
- Implement application-level crash monitoring to detect abnormal termination patterns
- Use endpoint detection and response (EDR) solutions to identify buffer overflow exploitation attempts
Monitoring Recommendations
- Enable crash dump collection for TaskInfo to capture memory state during crashes
- Configure alerts for repeated application failures within short time windows
- Review system logs for unusual activity around the TaskInfo process
How to Mitigate CVE-2019-25667
Immediate Actions Required
- Restrict access to systems running TaskInfo 8.2.0.280 to trusted users only
- Consider removing or disabling TaskInfo if it is not essential to operations
- Monitor for application crashes that may indicate exploitation attempts
- Check the IARSN vendor website for any available updates or patches
Patch Information
No official patch information is available in the CVE data. Organizations should monitor the vendor website at IARSN for security updates. Consider upgrading to a newer version of TaskInfo if one becomes available that addresses this vulnerability.
Workarounds
- Restrict physical and remote access to systems with TaskInfo installed to authorized personnel only
- Consider using alternative system monitoring tools that do not have this vulnerability
- If TaskInfo must be used, avoid using the registration dialog functionality
- Implement application control policies to limit who can interact with the TaskInfo application
# Limit TaskInfo execution to specific users (Windows PowerShell example)
# Set restrictive NTFS permissions on the TaskInfo executable
icacls "C:\Program Files\TaskInfo\taskinfo.exe" /inheritance:r /grant:r "BUILTIN\Administrators:(RX)"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
