CVE-2019-13455 : What You Need to Know

Xymon version 4.3.28 and below is impacted by a stack-based buffer overflow vulnerability in the alert acknowledgment CGI tool.

Understanding CVE-2019-13455

This CVE involves a vulnerability in Xymon that could allow attackers to exploit a stack-based buffer overflow.

What is CVE-2019-13455?

The alert acknowledgment CGI tool in Xymon version 4.3.28 and earlier is susceptible to a stack-based buffer overflow due to the expansion of special characters in the acknowledge.c file.

The Impact of CVE-2019-13455

This vulnerability could be exploited by malicious actors to execute arbitrary code or crash the application, potentially leading to a denial of service (DoS) condition.

Technical Details of CVE-2019-13455

Xymon version 4.3.28 and below are affected by this vulnerability.

Vulnerability Description

A stack-based buffer overflow vulnerability exists in the alert acknowledgment CGI tool of Xymon due to improper handling of special characters in the acknowledge.c file.

Affected Systems and Versions

Xymon version 4.3.28 and earlier

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious input containing special characters that trigger the buffer overflow, potentially leading to arbitrary code execution.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent exploitation of this vulnerability.

Immediate Steps to Take

Apply the vendor-supplied patches or updates to mitigate the vulnerability.
Monitor security advisories for any further updates or recommendations.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Implement proper input validation and sanitization mechanisms to prevent buffer overflows.

Patching and Updates

Ensure that Xymon is updated to a version that includes a fix for the buffer overflow vulnerability.