CVE-2019-11878 : Security Advisory and Response

XiongMai Besder IP20H1 V4.02.R12.00035520.12012.047500.00200 cameras are vulnerable to a specific issue that can be exploited by an attacker within the same local network. This vulnerability can cause the camera to malfunction, rendering it non-functional for a period of approximately 120 seconds.

Understanding CVE-2019-11878

This CVE entry highlights a critical vulnerability in XiongMai Besder IP20H1 V4.02.R12.00035520.12012.047500.00200 cameras.

What is CVE-2019-11878?

The identified issue allows an attacker on the local network to send a specially crafted message to the camera, triggering an integer overflow or utilization of a negative number, resulting in the camera becoming non-operational for around 120 seconds.

The Impact of CVE-2019-11878

The exploitation of this vulnerability can lead to a temporary denial of service, causing the camera to cease functioning for a significant duration.

Technical Details of CVE-2019-11878

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability arises from the camera's inability to handle large message sizes, leading to an integer overflow or negative number usage, ultimately causing the camera to malfunction.

Affected Systems and Versions

Product: XiongMai Besder IP20H1 V4.02.R12.00035520.12012.047500.00200
Vendor: XiongMai
Version: V4.02.R12.00035520.12012.047500.00200

Exploitation Mechanism

The attacker needs to be within the same local network as the camera to craft and send a message with a size field exceeding 0x80000000, triggering the vulnerability.

Mitigation and Prevention

Protecting systems from CVE-2019-11878 is crucial to maintaining security.

Immediate Steps to Take

Implement network segmentation to isolate vulnerable devices.
Regularly monitor network traffic for any suspicious activity.
Apply vendor-supplied patches or updates promptly.

Long-Term Security Practices

Conduct regular security assessments and penetration testing.
Educate users on safe network practices and awareness of potential threats.

Patching and Updates

Stay informed about security advisories from the vendor.
Apply patches and firmware updates as soon as they are released.