CVE-2021-34805 : What You Need to Know

An issue was discovered in FAUST iServer before 9.0.019.019.7 where it allows directory traversal in the operating system when processing URL requests.

Understanding CVE-2021-34805

This CVE involves a vulnerability in FAUST iServer that could be exploited for directory traversal.

What is CVE-2021-34805?

The vulnerability in FAUST iServer before version 9.0.019.019.7 allows attackers to traverse directories on the operating system by accessing .fau files without proper restriction.

The Impact of CVE-2021-34805

This vulnerability could be exploited by malicious actors to access sensitive files, potentially leading to unauthorized data disclosure or system compromise.

Technical Details of CVE-2021-34805

This section covers the specifics of the vulnerability.

Vulnerability Description

FAUST iServer fails to prevent directory traversal, enabling attackers to access files in unintended directories by manipulating URL requests.

Affected Systems and Versions

FAUST iServer versions before 9.0.019.019.7 are affected by this directory traversal vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specially crafted URL requests containing directory traversal sequences to access sensitive files.

Mitigation and Prevention

Here are the steps to mitigate and prevent exploitation of CVE-2021-34805.

Immediate Steps to Take

Users should update FAUST iServer to version 9.0.019.019.7 or newer to patch the directory traversal vulnerability.

Long-Term Security Practices

Implementing proper input validation and output encoding mechanisms can help prevent directory traversal attacks in web applications.

Patching and Updates

Regularly applying security patches and staying up to date with software versions is essential to protect systems from known vulnerabilities.