CVE-2019-13273 : Security Advisory and Response

Xymon through version 4.3.28 is susceptible to a buffer overflow vulnerability in the csvinfo CGI script, potentially leading to exploitation through crafted GET requests triggering an sprintf function.

Understanding CVE-2019-13273

This CVE identifies a buffer overflow vulnerability in Xymon's csvinfo CGI script, allowing attackers to exploit the issue through specially crafted GET requests.

What is CVE-2019-13273?

Xymon, from version 4.3.28, contains a vulnerability in the csvinfo CGI script that can result in a buffer overflow. This overflow can be abused by sending a specifically crafted GET request, which triggers an sprintf function with the srcdb parameter.

The Impact of CVE-2019-13273

The vulnerability could allow remote attackers to execute arbitrary code or cause a denial of service by sending malicious requests to the affected server.

Technical Details of CVE-2019-13273

Xymon's vulnerability in the csvinfo CGI script can have severe consequences if exploited.

Vulnerability Description

The vulnerability in the csvinfo CGI script of Xymon allows for a buffer overflow, which can be triggered by sending a crafted GET request, leading to potential code execution or denial of service.

Affected Systems and Versions

Xymon versions up to and including 4.3.28 are impacted by this vulnerability.

Exploitation Mechanism

The vulnerability can be exploited by sending a specially crafted GET request that triggers an sprintf function with the srcdb parameter, potentially leading to a buffer overflow.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2019-13273.

Immediate Steps to Take

Apply the necessary patches provided by the vendor to mitigate the vulnerability.
Monitor network traffic for any suspicious activity targeting the csvinfo CGI script.

Long-Term Security Practices

Regularly update and patch Xymon to the latest version to prevent known vulnerabilities.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Stay informed about security updates and patches released by Xymon to address vulnerabilities like the buffer overflow in the csvinfo CGI script.