CVE-2019-14706 Explained : Impact and Mitigation
Learn about CVE-2019-14706, a vulnerability in the HTTPD service on MicroDigital N-series cameras allowing denial of service attacks by uploading files with filenames longer than 256 bytes. Find mitigation steps and prevention measures here.
A vulnerability in the HTTPD service on MicroDigital N-series cameras allows unauthorized attackers to exploit a denial of service issue by uploading a file with a filename longer than 256 bytes.
Understanding CVE-2019-14706
This CVE identifies a specific vulnerability in the HTTPD service on MicroDigital N-series cameras.
What is CVE-2019-14706?
The vulnerability enables unauthorized attackers to trigger a denial of service by uploading a file with a filename exceeding 256 bytes to the upload.php endpoint.
The Impact of CVE-2019-14706
The vulnerability allows attackers to cause a denial of service by exploiting a buffer overflow in a Bash command string, leading to the persistence of the uploaded file in the designated area.
Technical Details of CVE-2019-14706
This section provides technical details of the CVE.
Vulnerability Description
The vulnerability in the HTTPD service on MicroDigital N-series cameras allows unauthorized attackers to exploit a denial of service issue by uploading a file with a filename longer than 256 bytes.
Affected Systems and Versions
- MicroDigital N-series cameras running firmware versions up to 6400.0.8.5
Exploitation Mechanism
- Attackers upload a file with a filename longer than 256 bytes to the upload.php endpoint
- The file is stored in the designated updownload area
- A buffer overflow in a Bash command string prevents the file's deletion
Mitigation and Prevention
Protect systems from CVE-2019-14706 with the following measures.
Immediate Steps to Take
- Implement network segmentation to limit access to vulnerable devices
- Monitor network traffic for any suspicious activities
- Apply access controls to restrict file uploads
Long-Term Security Practices
- Regularly update firmware and software to patch known vulnerabilities
- Conduct security assessments and penetration testing to identify weaknesses
- Educate users on safe file upload practices
Patching and Updates
- Apply patches and updates provided by MicroDigital to address the vulnerability