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CVE-2020-35864 : Exploit Details and Defense Strategies

Discover the impact of CVE-2020-35864, a vulnerability in the flatbuffers crate for Rust allowing transmutation of values without unsafe blocks. Learn how to mitigate and prevent risks.

An issue was discovered in the flatbuffers crate through 2020-04-11 for Rust. read_scalar (and read_scalar_at) can transmute values without unsafe blocks.

Understanding CVE-2020-35864

This CVE involves a vulnerability in the flatbuffers crate for Rust that allows the transmutation of values without the use of unsafe blocks.

What is CVE-2020-35864?

The vulnerability in the flatbuffers crate for Rust allows the read_scalar function to transmute values without the necessary unsafe blocks, potentially leading to security risks.

The Impact of CVE-2020-35864

This vulnerability could be exploited by malicious actors to manipulate values in a way that could compromise the integrity and security of Rust applications.

Technical Details of CVE-2020-35864

The technical details of this CVE include:

Vulnerability Description

        The issue lies in the flatbuffers crate for Rust, specifically in the read_scalar function.
        The vulnerability allows the transmutation of values without the required unsafe blocks.

Affected Systems and Versions

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

Exploitation Mechanism

        Malicious actors can exploit this vulnerability to manipulate values within Rust applications without using unsafe blocks, potentially leading to security breaches.

Mitigation and Prevention

To address CVE-2020-35864, consider the following steps:

Immediate Steps to Take

        Update the flatbuffers crate to the latest version that contains a fix for this vulnerability.
        Review and validate input values to prevent malicious manipulation.

Long-Term Security Practices

        Regularly monitor for updates and security advisories related to Rust crates and dependencies.
        Implement secure coding practices to minimize the risk of similar vulnerabilities.

Patching and Updates

        Apply patches and updates promptly to ensure that known vulnerabilities are addressed and mitigated.

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