CVE-2021-39828 : Security Advisory and Response

Adobe Digital Editions 4.5.11.187646 (and earlier) are affected by a privilege escalation vulnerability in the Digital Editions installer.

Understanding CVE-2021-39828

Adobe Digital Editions Installer has a flaw that could lead to local privilege escalation.

What is CVE-2021-39828?

CVE ID: CVE-2021-39828
Vendor: Adobe
Affected Product: Digital Editions
Vulnerability Type: Privilege Escalation
Attack Complexity: Low
Attack Vector: Local
User Interaction Required: Yes

The Impact of CVE-2021-39828

The impact of this vulnerability can lead to:

High confidentiality and integrity impact
High privileges required for exploitation
No availability impact

Technical Details of CVE-2021-39828

The technical details of the vulnerability are as follows:

Vulnerability Description

Adobe Digital Editions 4.5.11.187646 (and earlier) are prone to a privilege escalation vulnerability in the installer.
An authenticated attacker can exploit this vulnerability to escalate privileges.
User interaction is necessary before product installation to abuse this vulnerability.

Affected Systems and Versions

Adobe Digital Editions versions up to 4.5.11.187646 are affected.

Exploitation Mechanism

The vulnerability allows an attacker to escalate privileges locally through the Digital Editions installer.

Mitigation and Prevention

It is important to take immediate action and follow long-term security practices to mitigate the risk.

Immediate Steps to Take

Update to the latest version of Adobe Digital Editions.
Exercise caution when interacting with executable files.

Long-Term Security Practices

Regularly update software to patch vulnerabilities.
Implement the principle of least privilege to limit potential damage.

Patching and Updates

Adobe has released security updates to address this vulnerability.