CVE-2020-24439 : Exploit Details and Defense Strategies

Acrobat Reader DC for macOS versions 2020.012.20048 (and earlier), 2020.001.30005 (and earlier), and 2017.011.30175 (and earlier) are affected by a security feature bypass. While the practical security impact is minimal, a defense-in-depth fix has been implemented to further harden the Adobe Reader update process.

Understanding CVE-2020-24439

Acrobat Reader DC for macOS Signature Validation Bypass

What is CVE-2020-24439?

CVE-2020-24439 is a vulnerability affecting Adobe Acrobat Reader DC for macOS, allowing a security feature bypass.

The Impact of CVE-2020-24439

CVSS Base Score: 2.8 (Low)
Attack Vector: Local
Attack Complexity: Low
User Interaction: Required
Integrity Impact: Low
Privileges Required: Low
Scope: Unchanged
Confidentiality Impact: None
Availability Impact: None

Technical Details of CVE-2020-24439

Acrobat Reader DC for macOS Signature Validation Bypass

Vulnerability Description

The vulnerability allows for a security feature bypass in Acrobat Reader DC for macOS versions.

Affected Systems and Versions

Adobe Acrobat Reader
Versions affected: 2017.011.30175, 2020.012.20048, 2020.001.30005

Exploitation Mechanism

The vulnerability can be exploited locally with low complexity, requiring user interaction.

Mitigation and Prevention

Steps to address and prevent CVE-2020-24439

Immediate Steps to Take

Update Acrobat Reader to the latest version
Monitor Adobe security advisories for patches

Long-Term Security Practices

Regularly update software and applications
Implement defense-in-depth strategies

Patching and Updates

Apply security patches promptly
Follow best practices for secure software usage