CVE-2021-28638 : Security Advisory and Response

Adobe Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier), and 2017.011.30197 (and earlier) are affected by a Heap-based Buffer overflow vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user.

Understanding CVE-2021-20657

This CVE refers to a Heap-based Buffer overflow vulnerability in Adobe Acrobat Reader DC versions, potentially allowing remote code execution.

What is CVE-2021-28638?

CVE-2021-28638 indicates a security flaw in Adobe Acrobat Reader that enables attackers to execute arbitrary code by exploiting a Heap-based Buffer overflow vulnerability.

The Impact of CVE-2021-28638

This vulnerability has a CVSS base score of 7.8 (High severity) and affects confidentiality, integrity, and availability. A successful exploit could result in remote code execution.

Technical Details of CVE-2021-28638

Adobe Acrobat Reader DC is susceptible to a Heap-based Buffer overflow vulnerability, requiring user interaction to exploit the issue.

Vulnerability Description

The vulnerability allows an unauthenticated attacker to execute arbitrary code in the context of the current user by exploiting a Heap-based Buffer overflow.

Affected Systems and Versions

Systems running Adobe Acrobat Reader DC versions 2021.005.20054, 2020.004.30005, and 2017.011.30197 are vulnerable to this exploit.

Exploitation Mechanism

For successful exploitation, a victim must interact with a malicious file, triggering the vulnerability in Adobe Acrobat Reader.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2021-28638.

Immediate Steps to Take

Users should update Adobe Acrobat Reader DC to the latest version to patch the vulnerability. Exercise caution while opening PDF files from untrusted sources to prevent exploitation.

Long-Term Security Practices

Implementing a robust security policy, educating users about phishing attacks, and regularly updating software are essential for maintaining system security.

Patching and Updates

Regularly check for updates from Adobe and apply patches promptly to address known vulnerabilities.