CVE-2021-40770 : What You Need to Know

Adobe Prelude version 10.1 (and earlier) is affected by a memory corruption vulnerability due to insecure handling of a malicious M4A file, potentially resulting in arbitrary code execution in the context of the current user. This vulnerability requires user interaction through opening a specifically crafted file.

Understanding CVE-2021-40770

Adobe Prelude is susceptible to a memory corruption issue triggered by handling a malicious M4A file, allowing attackers to potentially execute arbitrary code with the user's privileges.

What is CVE-2021-40770?

This CVE pertains to a memory corruption vulnerability in Adobe Prelude that could lead to arbitrary code execution by exploiting a crafted M4A file. The attack requires user interaction, as the victim must open the compromised file.

The Impact of CVE-2021-40770

The vulnerability comes with a CVSSv3.1 base score of 7.8 (High severity), affecting confidentiality, integrity, and availability due to potential arbitrary code execution within the current user's context.

Technical Details of CVE-2021-40770

Adobe Prelude's vulnerability involves the following technical aspects:

Vulnerability Description

CWE-788: Access of Memory Location After End of Buffer

Affected Systems and Versions

Product: Adobe Prelude
Vendor: Adobe
Vulnerable Versions: <= 10.1 and unspecified custom versions

Exploitation Mechanism

Attack Vector: Local
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
Impact: High (Confidentiality, Integrity, Availability)

Mitigation and Prevention

In response to CVE-2021-40770, consider the following steps:

Immediate Steps to Take

Update Adobe Prelude to a non-vulnerable version.
Avoid opening untrusted or suspicious files.
Implement file validation mechanisms.

Long-Term Security Practices

Regularly update software and apply patches promptly.
Educate users on identifying and handling malicious files.

Patching and Updates

Adobe has likely released a patch addressing this vulnerability. Apply all relevant updates to ensure system security.