CVE-2020-14029 : Exploit Details and Defense Strategies

Ozeki NG SMS Gateway through 4.17.6 is vulnerable to an XML External Entity attack due to unsafe processing of XML files in the RSS To SMS module.

Understanding CVE-2020-14029

This CVE identifies a security issue in Ozeki NG SMS Gateway that can lead to SSRF attacks or unauthorized access to local files.

What is CVE-2020-14029?

The vulnerability in Ozeki NG SMS Gateway allows attackers to exploit XML External Entity vulnerabilities, potentially leading to SSRF attacks or unauthorized access to local files.

The Impact of CVE-2020-14029

The vulnerability can be exploited by malicious actors to perform Server-Side Request Forgery (SSRF) attacks or read arbitrary local files, compromising the confidentiality and integrity of the system.

Technical Details of CVE-2020-14029

Ozeki NG SMS Gateway through version 4.17.6 is affected by this vulnerability.

Vulnerability Description

The RSS To SMS module of Ozeki NG SMS Gateway processes XML files in an unsafe manner, making the application susceptible to XML External Entity attacks.

Affected Systems and Versions

Product: Ozeki NG SMS Gateway
Vendor: Ozeki
Versions: Up to and including 4.17.6

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious XML files to trigger XML External Entity attacks, enabling SSRF or unauthorized access to local files.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2020-14029.

Immediate Steps to Take

Update Ozeki NG SMS Gateway to the latest version that includes a patch for this vulnerability.
Implement strict input validation mechanisms to prevent malicious XML file uploads.
Monitor and restrict network access to the SMS Gateway to prevent SSRF attacks.

Long-Term Security Practices

Regularly update and patch all software components to address known vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate potential security weaknesses.

Patching and Updates

Ozeki NG SMS Gateway users should apply the vendor-supplied patches promptly to eliminate the vulnerability and enhance system security.