CVE-2021-21772 : Vulnerability Insights and Analysis

A detailed overview of the use-after-free vulnerability in the NMR::COpcPackageReader::releaseZIP() functionality of 3MF Consortium lib3mf 2.0.0, leading to code execution when processing a specially crafted 3MF file. Learn about its impact, technical details, and mitigation steps.

Understanding CVE-2021-21772

This section delves into the critical aspects of CVE-2021-21772, shedding light on the vulnerability's nature and implications.

What is CVE-2021-21772?

CVE-2021-21772 is a use-after-free vulnerability embedded in the NMR::COpcPackageReader::releaseZIP() feature of 3MF Consortium lib3mf 2.0.0. Cyber adversaries can exploit this flaw by providing a malicious 3MF file, potentially resulting in arbitrary code execution.

The Impact of CVE-2021-21772

The impact of this vulnerability can be severe, as threat actors can leverage it to compromise systems running the affected versions of 3MF Consortium lib3mf 2.0.0. Successful exploitation could lead to unauthorized code execution with high confidentiality, integrity, and availability impacts.

Technical Details of CVE-2021-21772

Uncover the technical nuances of CVE-2021-21772, including its description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

The use-after-free vulnerability in NMR::COpcPackageReader::releaseZIP() within 3MF Consortium lib3mf 2.0.0 arises due to improper memory operations, allowing an attacker to manipulate the application's memory allocation and potentially execute arbitrary code.

Affected Systems and Versions

The vulnerability impacts systems utilizing 3MF Consortium lib3mf 2.0.0. Specifically, the version 2.0.0 of the library is confirmed to be affected, potentially putting users at risk of exploitation.

Exploitation Mechanism

By crafting a malicious 3MF file and enticing a target to open it using an application linked to the vulnerable library, threat actors can trigger the use-after-free flaw. This could result in the execution of unauthorized commands, compromising system security.

Mitigation and Prevention

Explore the key strategies to mitigate the risks associated with CVE-2021-21772, safeguarding systems from potential exploitation.

Immediate Steps to Take

To mitigate the vulnerability, users should promptly update the affected 3MF Consortium lib3mf 2.0.0 version to a patched release. Additionally, exercising caution while handling 3MF files from untrusted sources is crucial to prevent exploitation.

Long-Term Security Practices

Regularly updating software components, implementing secure coding practices, and enhancing threat detection mechanisms can fortify defenses against similar vulnerabilities in the long run.

Patching and Updates

Stay informed about security advisories and patches released by 3MF Consortium for lib3mf 2.0.0 to address the CVE-2021-21772 vulnerability effectively.