CVE-2021-39827 : Vulnerability Insights and Analysis

Adobe Digital Editions 4.5.11.187646 (and earlier) are affected by an arbitrary file write vulnerability in the Digital Editions installer, potentially allowing an attacker to write arbitrary files to the system.

Understanding CVE-2021-39827

This CVE involves a security flaw in the Adobe Digital Editions Installer that can lead to Arbitrary File System Write.

What is CVE-2021-39827?

Type: Arbitrary file write vulnerability
Vendor: Adobe
Affected Product: Digital Editions
Versions: 4.5.11.187646 and earlier
Attack Vector: Local
Privileges Required: High

The Impact of CVE-2021-39827

Base Score: 6.5 (Medium)
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High
User Interaction Required: Yes
Scope: Unchanged

Technical Details of CVE-2021-39827

This section covers the technical details and implications of the vulnerability.

Vulnerability Description

Adobe Digital Editions installer is prone to an arbitrary file write vulnerability, allowing an authenticated attacker to write arbitrary files to the system.

Affected Systems and Versions

Adobe Digital Editions 4.5.11.187646 and earlier versions

Exploitation Mechanism

An attacker with high privileges can exploit the flaw by manipulating the Digital Editions installer, requiring user interaction during product installation.

Mitigation and Prevention

Here are the recommended actions to mitigate and prevent exploitation of CVE-2021-39827.

Immediate Steps to Take

Update Adobe Digital Editions to the latest version.
Be cautious while interacting with the installer to prevent arbitrary file writes.

Long-Term Security Practices

Regularly monitor for security advisories and updates from Adobe.
Implement least privilege access to limit potential impact of arbitrary file writes.

Patching and Updates

Adobe has released patches to address this vulnerability. Ensure all systems are updated with the latest patches.