CVE-2024-21683: High Severity RCE Vulnerability in Confluence Data Center and Server

A major security vulnerability (CVE-2024-21683) has been identified in version 5.2 of Confluence Data Center and Server platform. This high severity Remote Code Execution (RCE) vulnerability has a CVSS Score of 8.3, implying a significant risk for the affected systems. An authenticated attacker can exploit this vulnerability to execute arbitrary code, which has a high impact on system confidentiality, integrity, and availability.

Details of the Vulnerability

The CVE-2024-21683 vulnerability is caused by a flaw in the software's handling of user-supplied input. Exploitation of the flaw allows a malicious attacker to inject arbitrary code into the application without the need for any user interaction.

Here's a code snippet illustrating an example of the vulnerable input handling

def vulnerable_function(input_data):
    # ... Some data processing

    # Vulnerable part
    eval(input_data)

    # ... Rest of the function

In this example, the use of the eval() function with unfiltered user input allows for code execution by the attacker.

Affected Versions

This RCE vulnerability affects version 5.2 of Confluence Data Center and Server. If you're using this software, it's crucial to upgrade to the latest version or the specified supported fixed versions as detailed in the release notes: https://confluence.atlassian.com/doc/confluence-release-notes-327.html.

Mitigation Steps

Atlassian strongly recommends Confluence Data Center and Server customers to take the following steps to address this vulnerability:

1. Upgrade to the latest version, available in the download center: https://www.atlassian.com/software/confluence/download-archives.

2. If you're unable to upgrade to the latest version, upgrade your Confluence instance to one of the specified supported fixed versions listed in the release notes.

Acknowledgements

Atlassian discovered this critical vulnerability through their internal review process. They're committed to the ongoing security of their products and users, and they encourage users to report security vulnerabilities through their responsible disclosure program: https://www.atlassian.com/trust/security/reporting-security-issues.

Conclusion

In conclusion, CVE-2024-21683 points out a high severity RCE vulnerability in Confluence Data Center and Server software. Addressing this vulnerability by upgrading to the latest version or the specified supported fixed versions is essential in ensuring the security and integrity of data within your organization. Stay vigilant and proactive when it comes to vulnerability management, and always keep your systems up-to-date with the latest security patches and improvements.

Timeline

Published on: 05/21/2024 23:15:07 UTC
Last modified on: 06/04/2024 14:30:30 UTC