CVE-2020-12853 : Security Advisory and Response

Pydio Cells 2.0.4 allows XSS, enabling a malicious user to upload or create files with potentially harmful HTML and JavaScript code.

Understanding CVE-2020-12853

Pydio Cells 2.0.4 vulnerability allowing XSS attacks.

What is CVE-2020-12853?

This CVE refers to a cross-site scripting (XSS) vulnerability in Pydio Cells 2.0.4, which could be exploited by a malicious actor to inject and execute malicious scripts in the context of a user's web browser.

The Impact of CVE-2020-12853

Malicious users can upload files containing harmful code to personal folders or accessible cells, potentially leading to unauthorized access or data theft.

Technical Details of CVE-2020-12853

Details of the technical aspects of the vulnerability.

Vulnerability Description

Pydio Cells 2.0.4 is susceptible to XSS attacks, allowing the insertion of malicious HTML and JavaScript code.

Affected Systems and Versions

Product: Pydio Cells 2.0.4
Vendor: Pydio
Versions: All versions up to 2.0.4

Exploitation Mechanism

Malicious users can exploit this vulnerability by uploading or creating files with malicious code to personal folders or accessible cells within Pydio Cells 2.0.4.

Mitigation and Prevention

Measures to mitigate and prevent the exploitation of CVE-2020-12853.

Immediate Steps to Take

Update Pydio Cells to the latest version to patch the vulnerability.
Regularly monitor and review files uploaded to personal folders or cells for suspicious content.

Long-Term Security Practices

Implement content security policies to restrict the execution of scripts from untrusted sources.
Educate users on safe file handling practices to prevent the upload of malicious files.

Patching and Updates

Apply security patches and updates provided by Pydio promptly to address known vulnerabilities.