CVE-2019-20049 : Exploit Details and Defense Strategies

A vulnerability has been found in Alcatel-Lucent OmniVista 4760 devices that allows remote attackers to execute arbitrary code as the SYSTEM user.

Understanding CVE-2019-20049

This CVE identifies a critical security issue in Alcatel-Lucent OmniVista 4760 devices that can lead to remote code execution.

What is CVE-2019-20049?

This vulnerability in Alcatel-Lucent OmniVista 4760 devices enables remote attackers to execute arbitrary code as the SYSTEM user without authentication by exploiting a directory traversal vulnerability and an insecure file upload vulnerability.

The Impact of CVE-2019-20049

The exploitation of this vulnerability can result in unauthorized remote code execution on affected devices, potentially leading to severe consequences such as data breaches, system compromise, and unauthorized access.

Technical Details of CVE-2019-20049

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability allows remote unauthenticated attackers to combine a directory traversal exploit with an insecure file upload vulnerability to achieve remote code execution as the SYSTEM user on Alcatel-Lucent OmniVista 4760 devices. The directory traversal vulnerability is located in the __construct() method, while the insecure file upload vulnerability exists in the SetSkinImages() function.

Affected Systems and Versions

Product: Alcatel-Lucent OmniVista 4760
Vendor: Alcatel-Lucent
Versions: All versions are affected

Exploitation Mechanism

The vulnerability can be exploited by chaining a directory traversal exploit with an insecure file upload, allowing remote attackers to execute arbitrary code as the SYSTEM user without authentication.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2019-20049 and implement long-term security practices to prevent similar vulnerabilities.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Conduct regular security assessments and penetration testing.
Keep systems and software up to date with the latest security patches.
Educate users and IT staff about security best practices and awareness.

Patching and Updates

Regularly check for security updates and patches from Alcatel-Lucent.
Apply patches as soon as they are released to ensure the security of Alcatel-Lucent OmniVista 4760 devices.