CVE-2019-25354: iSmartViewPro DoS Vulnerability

CVE-2019-25354 Overview

CVE-2019-25354 is a denial of service vulnerability affecting iSmartViewPro version 1.3.34, a mobile application used for remote camera viewing on iOS devices. The vulnerability exists due to a classic buffer overflow (CWE-120) in the camera ID input field handling. Attackers can exploit this flaw by providing an oversized input buffer that causes the application to crash, disrupting the user's ability to monitor their camera feeds.

The vulnerability is triggered when an attacker pastes a 257-character buffer into the camera DID (Device ID) and password fields. This overflow condition causes the application to terminate unexpectedly, resulting in a denial of service condition for the affected user.

Critical Impact

This buffer overflow vulnerability allows attackers to crash the iSmartViewPro application on iOS devices by overflowing input fields with 257+ character strings, preventing users from accessing their camera monitoring functionality.

Affected Products

• iSmartViewPro version 1.3.34 for iOS
• SmartEye Group camera management applications

Discovery Timeline

• 2026-02-18 - CVE-2019-25354 published to NVD
• 2026-02-19 - Last updated in NVD database

Technical Details for CVE-2019-25354

Vulnerability Analysis

This vulnerability stems from improper bounds checking in the input handling routines of the iSmartViewPro iOS application. The application fails to properly validate the length of user-supplied input in the camera DID and password fields before copying it into fixed-size memory buffers.

When a user (or attacker with physical access to the device) enters or pastes more than 256 characters into these input fields, the application attempts to store this data in a buffer that cannot accommodate the oversized input. This results in a buffer overflow condition that corrupts adjacent memory, leading to application instability and ultimately a crash.

The local attack vector requires the attacker to have direct access to the device running the vulnerable application, limiting the exploitability to physical access scenarios or situations where malicious input could be introduced through other means.

Root Cause

The root cause of CVE-2019-25354 is a classic buffer overflow vulnerability (CWE-120: Buffer Copy without Checking Size of Input). The iSmartViewPro application allocates a fixed-size buffer for the camera DID and password input fields but fails to implement proper bounds checking before copying user-supplied data into these buffers.

The input validation mechanism does not enforce a maximum character limit on the input fields, allowing users to paste arbitrary-length strings. When the input exceeds 256 characters (the buffer reaches 257 characters including null terminator), the overflow occurs and corrupts the application's memory space.

Attack Vector

The attack requires local access to the device running iSmartViewPro. An attacker can exploit this vulnerability by:

1. Opening the iSmartViewPro application on an iOS device
2. Navigating to the camera configuration or login screen
3. Pasting a string of 257 or more characters into the camera DID field
4. Pasting a similar oversized string into the password field
5. The application crashes due to buffer overflow, denying service to the user

The exploitation is straightforward and requires no authentication or special privileges beyond physical access to the device. A proof-of-concept exploit is documented in Exploit-DB #47662.

Detection Methods for CVE-2019-25354

Indicators of Compromise

• Repeated application crashes of iSmartViewPro on iOS devices
• Crash logs showing memory access violations or buffer overflow conditions
• Abnormally long strings present in application input fields or configuration files
• iOS crash reports indicating EXC_BAD_ACCESS or similar memory-related exceptions in iSmartViewPro

Detection Strategies

• Monitor iOS crash reporting systems for repeated iSmartViewPro application crashes
• Implement mobile device management (MDM) solutions to track application stability metrics
• Review device logs for patterns of abnormal termination events associated with the iSmartViewPro application
• Deploy endpoint protection solutions capable of detecting exploitation attempts on mobile devices

Monitoring Recommendations

• Enable crash analytics for enterprise-deployed iOS applications to identify exploitation attempts
• Configure alerting for unusual patterns of application crashes across managed devices
• Implement SentinelOne Mobile Threat Defense to monitor for suspicious application behavior on iOS devices
• Review application logs and device diagnostics regularly for signs of tampering or exploitation

How to Mitigate CVE-2019-25354

Immediate Actions Required

• Update iSmartViewPro to the latest available version if a patched release is available
• Consider uninstalling or disabling the application if it is not actively needed
• Restrict physical access to devices running the vulnerable application
• Deploy alternative camera monitoring applications that do not contain this vulnerability
• Implement enterprise MDM policies to control application deployment and updates

Patch Information

No official patch information is available from the vendor at this time. Users should monitor the SmartEye Group website and the iSmartViewPro App Store listing for security updates. Additional vulnerability details are available in the VulnCheck Advisory.

Workarounds

• Avoid pasting text from untrusted sources into the iSmartViewPro application input fields
• Use only manually typed, appropriately sized credentials when configuring cameras
• Consider implementing network-level access controls to limit who can interact with devices running the vulnerable application
• Deploy SentinelOne Singularity Mobile to protect iOS devices from exploitation attempts

# iOS device management - block vulnerable application version
# Example MDM configuration to restrict iSmartViewPro 1.3.34
# Configure your MDM solution to blacklist the vulnerable version:
# Bundle ID: com.smarteye.ismartviewpro
# Version: 1.3.34
# Action: Block or Remove