CVE-2021-26247 : Vulnerability Insights and Analysis
Learn about CVE-2021-26247, a critical vulnerability in Cacti that allows remote attackers to execute malicious JavaScript payloads. Understand the impact, technical details, and mitigation steps.
This article provides details about CVE-2021-26247, a vulnerability in Cacti that allows remote attackers to execute malicious JavaScript payloads.
Understanding CVE-2021-26247
CVE-2021-26247 is a security vulnerability in Cacti that enables unauthenticated remote users to execute JavaScript payloads through a specific URL.
What is CVE-2021-26247?
The CVE-2021-26247 vulnerability in Cacti allows attackers to inject and execute malicious JavaScript code by visiting a crafted URL.
The Impact of CVE-2021-26247
The impact of CVE-2021-26247 includes the ability for remote attackers to execute unauthorized code, potentially leading to data theft, system compromise, or unauthorized access.
Technical Details of CVE-2021-26247
CVE-2021-26247 affects Cacti version 0.8.7g and allows attackers to include and execute JavaScript payloads via a specific URL parameter.
Vulnerability Description
Attackers can exploit CVE-2021-26247 by inserting JavaScript payloads into the 'ref' URL parameter on the 'auth_changepassword.php' page, leading to unauthorized code execution.
Affected Systems and Versions
Cacti version 0.8.7g is affected by CVE-2021-26247, potentially exposing systems with this version to the risk of remote code execution.
Exploitation Mechanism
By sending a crafted HTTP request to the targeted Cacti server with the malicious JavaScript payload in the 'ref' parameter, attackers can trigger the execution of the injected code.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-26247, it is crucial to take immediate action to secure affected systems and implement long-term security measures.
Immediate Steps to Take
- Update Cacti to a patched version that addresses CVE-2021-26247.
- Implement web application firewalls to filter and block malicious payloads.
- Monitor network traffic for any suspicious activity.
Long-Term Security Practices
- Regularly update software and applications to patch known vulnerabilities.
- Conduct security audits and penetration testing to proactively identify and address security weaknesses.
- Educate users and administrators about safe browsing practices and the importance of cybersecurity.
Patching and Updates
Refer to the official Cacti website for the latest updates and security patches to protect systems from CVE-2021-26247.