CVE-2021-39825 : What You Need to Know

Adobe Photoshop Elements versions 2021 build 19.0 and earlier are affected by an out-of-bounds write vulnerability that could lead to arbitrary code execution.

Understanding CVE-2021-39825

Adobe Photoshop Elements Edit 2021 TTF Font Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability was published on September 14, 2021.

What is CVE-2021-39825?

Adobe Photoshop Elements versions 2021 build 19.0 and earlier are susceptible to an out-of-bounds write vulnerability.
The vulnerability could allow an attacker to execute arbitrary code within the context of the current user.
Exploitation necessitates user interaction by opening a malicious TTF file.

The Impact of CVE-2021-39825

CVSS Base Score: 7.8 (High)
Attack Vector: Local
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
Confidentiality, Integrity, and Availability Impact: High

Technical Details of CVE-2021-39825

Adobe Photoshop Elements Edit 2021 TTF Font Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability has the following technical details:

Vulnerability Description

The vulnerability is categorized as an Out-of-bounds Write (CWE-787).

Affected Systems and Versions

Product: Photoshop Elements
Vendor: Adobe
Affected Versions:
Photoshop Elements 2021 build 19.0 (up to version 2021.156367)
All unspecified versions are affected

Exploitation Mechanism

The exploitation of this vulnerability requires a victim to open a malicious TTF file, resulting in arbitrary code execution.

Mitigation and Prevention

Immediate Steps to Take:

Update Adobe Photoshop Elements to a patched version.
Avoid opening TTF files from untrusted sources.

Long-Term Security Practices:

Regularly update software and apply security patches.
Educate users on the risks associated with opening files from unknown sources.

Patching and Updates:

Refer to the Adobe security advisory for patch availability and update instructions.