CVE-2022-27791 Explained : Impact and Mitigation

Adobe Acrobat Reader DC versions 22.001.20085 (and earlier), 20.005.3031x (and earlier), and 17.012.30205 (and earlier) are affected by a stack-based buffer overflow vulnerability. This vulnerability arises due to insecure processing of a font, potentially leading to arbitrary code execution with high severity.

Understanding CVE-2022-27791

This CVE involves a critical vulnerability in Adobe Acrobat Reader DC versions that could allow remote attackers to execute arbitrary code on the victim's system.

What is CVE-2022-27791?

Adobe Acrobat Reader DC is impacted by a stack-based buffer overflow vulnerability due to unsafe handling of a font. To exploit this issue, the attacker would need to trick the victim into opening a specially crafted PDF file.

The Impact of CVE-2022-27791

The vulnerability has a high severity level, with a base score of 7.8. Successful exploitation could result in arbitrary code execution in the context of the current user, posing a significant risk to affected systems.

Technical Details of CVE-2022-27791

This section provides technical insights into the vulnerability, including its description, affected systems, versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability is categorized as a stack-based buffer overflow (CWE-121) and requires user interaction to open a malicious PDF file, triggering the exploit.

Affected Systems and Versions

Acrobat Reader DC versions 22.001.20085, 20.005.3031x, and 17.012.30205 are confirmed to be vulnerable to this issue, potentially impacting user systems.

Exploitation Mechanism

To exploit this vulnerability, an attacker would create a specially crafted PDF file and trick the victim into opening it. Once opened, the malicious payload could lead to arbitrary code execution.

Mitigation and Prevention

In response to CVE-2022-27791, it is crucial to take immediate steps to enhance security and mitigate the risks posed by this vulnerability.

Immediate Steps to Take

Users are advised to update their Adobe Acrobat Reader DC to the latest version available. Additionally, exercise caution while opening PDF files from untrusted or unknown sources.

Long-Term Security Practices

Implement a robust security policy that includes regular software updates, effective user training on identifying phishing attempts, and maintaining awareness of the latest security threats.

Patching and Updates

Regularly check for security updates from Adobe and promptly install patches to ensure that your system is protected against known vulnerabilities.