CVE-2021-21062 : Vulnerability Insights and Analysis

This article provides detailed information about CVE-2021-21062, a vulnerability affecting Acrobat Reader DC versions.

Understanding CVE-2021-21062

CVE-2021-21062 is a Memory corruption vulnerability in Acrobat Reader DC versions that could lead to arbitrary code execution.

What is CVE-2021-21062?

Acrobat Reader DC versions 2020.013.20074 and earlier are affected by a memory corruption vulnerability. An attacker could exploit this to execute arbitrary code as the current user.

The Impact of CVE-2021-21062

The vulnerability has a CVSS base score of 7.8, with high severity due to confidentiality, integrity, and availability impacts.

Technical Details of CVE-2021-21062

The vulnerability involves a buffer overflow when parsing a specially crafted PDF file.

Vulnerability Description

A memory corruption vulnerability allows an unauthenticated attacker to achieve arbitrary code execution.

Affected Systems and Versions

Acrobat Reader DC versions 2020.013.20074, 2020.001.30018, and 2017.011.30188 are affected.

Exploitation Mechanism

User interaction is required for the exploit, where a victim must open a malicious PDF file.

Mitigation and Prevention

To mitigate the risk posed by CVE-2021-21062, follow these steps:

Immediate Steps to Take

Users are advised to update Acrobat Reader to the latest version to patch the vulnerability.

Long-Term Security Practices

Maintain updated security software and exercise caution when opening files from unknown sources.

Patching and Updates

Regularly check for security updates from Adobe and apply them promptly.