CVE-2023-49089 : Exploit Details and Defense Strategies

This article provides detailed information about CVE-2023-49089, a vulnerability in Umbraco CMS that allows path traversal when creating packages from the backoffice.

Understanding CVE-2023-49089

This section delves into the specifics of the CVE-2023-49089 vulnerability in Umbraco CMS.

What is CVE-2023-49089?

CVE-2023-49089 highlights an issue in Umbraco CMS versions 8.0.0 to 8.18.10, 9.0.0-rc001 to 10.8.1, and 11.0.0-rc1 to 12.3.4, enabling backoffice users to perform path traversal and write beyond the designated location.

The Impact of CVE-2023-49089

The impact of this vulnerability is rated as HIGH with a CVSS base score of 7.7. It poses an integrity impact wherein unauthorized users can modify data beyond their privileges.

Technical Details of CVE-2023-49089

This section elaborates on the technical aspects of CVE-2023-49089.

Vulnerability Description

Umbraco CMS allows users with package creation permissions to exploit path traversal, writing files outside the intended directory, up to versions 8.18.10, 10.8.1, and 12.3.0.

Affected Systems and Versions

The vulnerability affects Umbraco CMS versions 8.0.0 to 8.18.10, 9.0.0-rc001 to 10.8.1, and 11.0.0-rc1 to 12.3.4.

Exploitation Mechanism

Exploiting this vulnerability involves leveraging package creation permissions in the backoffice to perform path traversal and write files to unauthorized locations.

Mitigation and Prevention

This section outlines mitigation strategies to address CVE-2023-49089.

Immediate Steps to Take

Users are advised to update Umbraco CMS to versions 8.18.10, 10.8.1, or 12.3.0, which contain patches for the path traversal vulnerability.

Long-Term Security Practices

Implement user access controls and regularly monitor for any unauthorized activities within Umbraco CMS.

Patching and Updates

Regularly check for security updates from Umbraco and apply patches promptly to prevent exploitation of vulnerabilities.