CVE-2023-26777 : Vulnerability Insights and Analysis

This CVE-2023-26777 was published by MITRE on April 4, 2023, and it involves a Cross Site Scripting vulnerability found in the 'louislam Uptime Kuma' version 1.19.6 and earlier versions. This vulnerability allows a remote attacker to execute arbitrary commands by exploiting specific parameters in the 'status_page.js' endpoint.

Understanding CVE-2023-26777

In this section, we will delve deeper into the details of CVE-2023-26777 and understand its implications and impact on affected systems.

What is CVE-2023-26777?

CVE-2023-26777 is a Cross Site Scripting vulnerability that occurs in 'louislam Uptime Kuma' version 1.19.6 and previous versions. By manipulating certain parameters like description, title, footer, and incident creation in the 'status_page.js' endpoint, a remote attacker can execute arbitrary commands on the target system.

The Impact of CVE-2023-26777

The impact of this vulnerability is significant as it can be exploited remotely by malicious actors to run unauthorized commands on the affected system. This could lead to unauthorized access, data exfiltration, and potential disruption of services.

Technical Details of CVE-2023-26777

In this section, we will explore the technical aspects of CVE-2023-26777, including vulnerability description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

The vulnerability in 'louislam Uptime Kuma' version 1.19.6 and earlier versions allows for Cross Site Scripting attacks via certain parameters in the 'status_page.js' endpoint. This enables an attacker to execute arbitrary commands on the target system.

Affected Systems and Versions

The Cross Site Scripting vulnerability affects 'louislam Uptime Kuma' version 1.19.6 and versions preceding it. Systems running these versions are at risk of exploitation by remote attackers.

Exploitation Mechanism

To exploit this vulnerability, a remote attacker can manipulate the description, title, footer, and incident creation parameters in the 'status_page.js' endpoint of the affected application. By injecting malicious scripts, the attacker can execute arbitrary commands on the target system.

Mitigation and Prevention

Protecting systems from CVE-2023-26777 requires immediate steps to mitigate the vulnerability and implement long-term security practices.

Immediate Steps to Take

Update to the latest version of 'louislam Uptime Kuma' to patch the vulnerability.
Monitor and restrict access to the 'status_page.js' endpoint to prevent unauthorized exploitation.
Educate users on safe browsing practices to minimize the risk of Cross Site Scripting attacks.

Long-Term Security Practices

Regularly audit and test web applications for vulnerabilities like Cross Site Scripting.
Implement input validation and output encoding to prevent injection attacks.
Stay informed about security updates and patches for the software used in your environment.

Patching and Updates

Vendor patches and updates play a crucial role in addressing CVE-2023-26777. Keep track of security advisories from 'louislam Uptime Kuma' and apply patches promptly to secure your systems against known vulnerabilities.