CVE-2020-35899 : Exploit Details and Defense Strategies

An issue was discovered in the actix-service crate before 1.0.6 for Rust, allowing multiple mutable references to the same data.

Understanding CVE-2020-35899

This CVE involves a vulnerability in the actix-service crate for Rust.

What is CVE-2020-35899?

CVE-2020-35899 is a vulnerability in the Cell implementation of the actix-service crate, enabling the acquisition of more than one mutable reference to identical data.

The Impact of CVE-2020-35899

The vulnerability could lead to data corruption, unexpected behavior, or potentially enable attackers to manipulate data in unintended ways.

Technical Details of CVE-2020-35899

The technical aspects of this CVE are as follows:

Vulnerability Description

The issue lies in the Cell implementation, allowing the retrieval of multiple mutable references to the same data.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: Not applicable

Exploitation Mechanism

The vulnerability can be exploited by malicious actors to gain unauthorized access to data or manipulate it in unintended ways.

Mitigation and Prevention

To address CVE-2020-35899, consider the following steps:

Immediate Steps to Take

Update to version 1.0.6 or later of the actix-service crate.
Monitor for any unusual behavior that may indicate exploitation of the vulnerability.

Long-Term Security Practices

Regularly update dependencies to ensure the latest security patches are applied.
Conduct thorough code reviews to identify and address potential vulnerabilities.

Patching and Updates

Stay informed about security advisories and updates related to the actix-service crate.
Implement a robust software development lifecycle that includes security testing and reviews.