CVE-2019-25712: BlueAuditor Buffer Overflow DoS Vulnerability

CVE-2019-25712 Overview

CVE-2019-25712 is a buffer overflow vulnerability affecting BlueAuditor version 1.7.2.0. The vulnerability exists in the registration key field processing functionality, allowing local attackers to crash the application by submitting an oversized key value. This is classified as CWE-787 (Out-of-bounds Write), a memory corruption vulnerability that occurs when software writes data outside the boundaries of allocated memory.

Critical Impact

Local attackers can trigger a denial of service condition by entering a 256-byte buffer of repeated characters in the Key registration field, causing the application to crash during registration processing.

Affected Products

• BlueAuditor 1.7.2.0

Discovery Timeline

• 2026-04-12 - CVE-2019-25712 published to NVD
• 2026-04-13 - Last updated in NVD database

Technical Details for CVE-2019-25712

Vulnerability Analysis

This buffer overflow vulnerability stems from improper bounds checking in BlueAuditor's registration key processing functionality. When a user enters a registration key, the application fails to validate the length of the input before copying it into a fixed-size buffer. By providing an excessively long key value (256 bytes or more of repeated characters), an attacker can overflow the allocated buffer space, corrupting adjacent memory regions and causing the application to crash.

The vulnerability requires local access to the system where BlueAuditor is installed, as the attacker must interact with the application's registration interface directly. While the current impact is limited to denial of service through application crashes, buffer overflow vulnerabilities can sometimes be escalated to achieve code execution depending on memory layout and exploitation techniques.

Root Cause

The root cause of CVE-2019-25712 is the absence of proper input validation and boundary checking when processing registration key input. The application allocates a fixed-size buffer for the registration key but does not verify that user-supplied input fits within this allocated space before performing memory copy operations. This oversight allows oversized input to write beyond the buffer's boundaries, resulting in memory corruption.

Attack Vector

The attack vector is local, requiring the attacker to have access to the system where BlueAuditor is installed. The exploitation process involves:

1. Launching the BlueAuditor application on a local system
2. Navigating to the registration or license key entry interface
3. Entering a crafted payload consisting of 256 or more repeated characters in the key registration field
4. Submitting the oversized key value, which triggers the buffer overflow
5. The application crashes due to memory corruption, resulting in denial of service

The vulnerability can be triggered without any special privileges, as any user with access to the application can interact with the registration interface.

Detection Methods for CVE-2019-25712

Indicators of Compromise

• Unexpected BlueAuditor application crashes or terminations during registration attempts
• Windows Event Log entries indicating application faults in the BlueAuditor executable
• Memory access violation errors associated with the BlueAuditor process
• Repeated application restarts following failed registration attempts

Detection Strategies

• Monitor application crash dumps for BlueAuditor processes with memory access violations
• Implement application whitelisting to detect unauthorized modification of BlueAuditor binaries
• Enable Windows Error Reporting to capture crash telemetry related to buffer overflow conditions
• Deploy endpoint detection solutions capable of identifying exploitation attempts against buffer overflow vulnerabilities

Monitoring Recommendations

• Configure centralized logging to capture application crash events across endpoints
• Set up alerts for repeated BlueAuditor process failures within short time periods
• Monitor for anomalous input patterns in application logs if available
• Review endpoint security telemetry for signs of memory corruption exploitation

How to Mitigate CVE-2019-25712

Immediate Actions Required

• Restrict access to BlueAuditor installations to trusted users only
• Consider temporarily disabling or uninstalling BlueAuditor if not actively needed
• Implement application control policies to limit who can interact with the software
• Contact the vendor to inquire about patched versions addressing this vulnerability

Patch Information

No official patch information is available in the current CVE data. Organizations should monitor the vendor's official channels for security updates. Additional technical details about this vulnerability can be found in the Exploit-DB advisory #46087 and the VulnCheck Advisory.

Workarounds

• Limit local access to systems running BlueAuditor to authorized personnel only
• Implement network segmentation to isolate systems running vulnerable software
• Consider deploying endpoint protection solutions that can detect and block buffer overflow exploitation attempts
• Maintain regular system backups to ensure quick recovery if denial of service occurs