CVE-2020-27385 : What You Need to Know

FlexDotnetCMS before v1.5.11 Incorrect Access Control vulnerability allows unauthorized access to files outside the web root.

Understanding CVE-2020-27385

This CVE describes a security issue in FlexDotnetCMS that enables authenticated remote attackers to read and write files outside the web root.

What is CVE-2020-27385?

The vulnerability in the FileEditor of FlexDotnetCMS before v1.5.11 permits attackers to access and modify files beyond the intended scope through directory traversal and full path specification.

The Impact of CVE-2020-27385

The vulnerability allows attackers to view and edit sensitive files, potentially leading to data theft, unauthorized modifications, or system compromise.

Technical Details of CVE-2020-27385

The technical aspects of this CVE provide insights into the vulnerability's nature and its implications.

Vulnerability Description

The flaw in FlexDotnetCMS before v1.5.11 allows authenticated remote attackers to read and write files outside the web root using directory traversal or full path specification.

Affected Systems and Versions

Product: FlexDotnetCMS
Versions affected: Before v1.5.11

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the input field of the FileEditor with directory traversal (....) or specifying the full path (e.g., C:<file>).

Mitigation and Prevention

Protecting systems from CVE-2020-27385 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update FlexDotnetCMS to version 1.5.11 or newer to mitigate the vulnerability.
Implement proper input validation to prevent directory traversal attacks.

Long-Term Security Practices

Regularly monitor and audit file access and modifications within the web root.
Educate users on secure file handling practices to prevent unauthorized access.

Patching and Updates

Apply security patches promptly to address known vulnerabilities and enhance system security.