CVE-2022-26352 : Vulnerability Insights and Analysis

A security issue has been identified in the ContentResource API within dotCMS versions 3.0 through 22.02. The vulnerability enables threat actors to manipulate a multipart form request to upload a file without proper filename sanitization. This could lead to directory traversal, allowing the storage of files outside the intended location. In instances where anonymous content creation is permitted, unauthenticated attackers could upload malicious executable files, potentially resulting in remote code execution.

Understanding CVE-2022-26352

This section delves into the specifics of CVE-2022-26352, shedding light on its impact, technical details, and mitigation strategies.

What is CVE-2022-26352?

The vulnerability in the ContentResource API of dotCMS versions 3.0 through 22.02 permits attackers to bypass file upload restrictions and save files in unauthorized locations, possibly leading to remote code execution if certain conditions are met.

The Impact of CVE-2022-26352

The exploitation of this vulnerability could have severe consequences, as threat actors could upload malicious files like .jsp files, thus potentially compromising the host system and enabling remote code execution.

Technical Details of CVE-2022-26352

This section outlines specific technical aspects of the CVE, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The flaw in the ContentResource API of dotCMS allows bad actors to craft a multipart form request to upload files with unsanitized filenames, facilitating unauthorized file storage and potential remote code execution.

Affected Systems and Versions

The vulnerability affects dotCMS versions 3.0 through 22.02, making systems operating on these versions susceptible to the security risk posed by CVE-2022-26352.

Exploitation Mechanism

Threat actors can exploit this vulnerability by leveraging a multipart form request to upload a file with a manipulated filename, bypassing storage restrictions and potentially leading to remote code execution.

Mitigation and Prevention

In light of CVE-2022-26352, it is crucial for users and administrators to implement immediate steps to reduce the risk posed by this vulnerability and establish a robust long-term security posture.

Immediate Steps to Take

Promptly updating dotCMS to a patched version that addresses CVE-2022-26352 is imperative. Additionally, disabling anonymous content creation can help mitigate the risk of unauthorized file uploads.

Long-Term Security Practices

Implementing stringent upload file restrictions, conducting regular security assessments, and educating users on safe file handling practices are essential for enhancing long-term security resilience.

Patching and Updates

Regularly monitoring for security updates and promptly applying patches released by dotCMS is crucial in mitigating the risk of CVE-2022-26352 and other potential vulnerabilities.