CVE-2021-30457 : Vulnerability Insights and Analysis

An issue was discovered in the id-map crate through 2021-02-26 for Rust. This CVE involves a double free vulnerability that can occur in remove_set when a panic happens in a Drop impl.

Understanding CVE-2021-30457

This section provides insights into the details and impacts of CVE-2021-30457.

What is CVE-2021-30457?

CVE-2021-30457 is a vulnerability identified in the id-map crate within Rust. It involves a double free issue that can manifest during a panic in a Drop impl.

The Impact of CVE-2021-30457

The impact of CVE-2021-30457 can lead to a double free scenario, potentially resulting in system instability and crashes.

Technical Details of CVE-2021-30457

Here are the technical aspects of CVE-2021-30457 including the vulnerability description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

The vulnerability in the id-map crate allows for a double free to occur specifically in the remove_set function, triggered by a panic event in a Drop impl.

Affected Systems and Versions

All versions of the id-map crate through 2021-02-26 for Rust are affected by this vulnerability.

Exploitation Mechanism

The vulnerability can be exploited by causing a panic within a Drop implementation, leading to a double free condition in the remove_set function.

Mitigation and Prevention

In this section, we outline the steps to mitigate the CVE-2021-30457 risk and prevent potential exploitation.

Immediate Steps to Take

Developers should update the id-map crate to a patched version to eliminate the double free vulnerability and enhance system stability.

Long-Term Security Practices

Implementing secure coding practices and continuous monitoring for vulnerabilities can help prevent similar issues in the future.

Patching and Updates

Regularly updating dependencies, utilizing security tools, and staying informed about patches are crucial to maintaining a secure software environment.