CVE-2021-28642 : Vulnerability Insights and Analysis

Adobe Acrobat Pro DC Out-of-Bounds Write Arbitrary Code Execution Vulnerability was published on July 13, 2021. This vulnerability affects various versions of Acrobat Reader DC, potentially allowing an attacker to execute arbitrary code in the context of the current user through a malicious file.

Understanding CVE-2021-28642

This section delves into the details of the CVE-2021-28642 vulnerability.

What is CVE-2021-28642?

CVE-2021-28642 is an Out-of-bounds write vulnerability affecting Acrobat Reader DC versions 2021.005.20054 and earlier, 2020.004.30005 and earlier, as well as 2017.011.30197 and earlier. It opens the door for an unauthenticated attacker to execute arbitrary code, necessitating user interaction by opening a malicious file.

The Impact of CVE-2021-28642

With a CVSS base score of 8.8 (High Severity), this vulnerability poses a significant threat. The attack complexity is low, but the availability, confidentiality, and integrity impacts are all high. No privileges are required, but user interaction is necessary.

Technical Details of CVE-2021-28642

This section explores the technical aspects of CVE-2021-28642.

Vulnerability Description

CVE-2021-28642 is classified as an Out-of-bounds Write (CWE-787) vulnerability, indicating the possibility of unauthorized code execution.

Affected Systems and Versions

Adobe Acrobat Pro DC versions, including 2021.005.20054, 2020.004.30005, and 2017.011.30197, are impacted by this vulnerability.

Exploitation Mechanism

To exploit CVE-2021-28642, an attacker would require a victim to open a specially crafted malicious file.

Mitigation and Prevention

In this section, strategies to mitigate the risks associated with CVE-2021-28642 are discussed.

Immediate Steps to Take

Users are advised to remain cautious while opening files from untrusted or unknown sources to prevent potential exploitation.

Long-Term Security Practices

Implementing proactive security measures like regular software updates, security patches, and employee cybersecurity training can enhance overall defense.

Patching and Updates

Adobe may release security updates and patches to address CVE-2021-28642. It is crucial for users to apply these patches promptly to protect their systems from exploitation.