CVE-2021-41149 : Exploit Details and Defense Strategies

Tough provides a set of Rust libraries and tools for using the update framework (TUF) repositories. The tough library, prior to version 0.12.0, has a vulnerability that allows arbitrary content overwriting.

Understanding CVE-2021-41149

The vulnerability in the Tough library can lead to arbitrary file overwriting.

What is CVE-2021-41149?

The CVE-2021-41149 vulnerability stems from improper sanitization of target names in the Tough library, leading to potential file overwriting on the system.

The Impact of CVE-2021-41149

The vulnerability poses a high risk as it allows for arbitrary file content overwriting, potentially leading to exploitation of affected systems.

Technical Details of CVE-2021-41149

The technical details of the CVE-2021-41149 vulnerability.

Vulnerability Description

The Tough library, before version 0.12.0, does not properly sanitize target names.

Affected Systems and Versions

Product: Tough
Vendor: AWSLabs
Versions Affected: < 0.12.0

Exploitation Mechanism

Attack Complexity: HIGH
Attack Vector: NETWORK
Privileges Required: LOW
Scope: CHANGED
Confidentiality Impact: HIGH
Integrity Impact: HIGH
User Interaction: NONE
Availability Impact: NONE

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2021-41149.

Immediate Steps to Take

Update Tough library to version 0.12.0 to fix the vulnerability.

Long-Term Security Practices

Ensure proper input validation and sanitization in all code implementations.
Regularly update and patch software to address known vulnerabilities.

Patching and Updates

Apply patches and updates provided by AWSLabs to mitigate the vulnerability.