CVE-2021-40755 : What You Need to Know

Adobe After Effects version 18.4.1 and earlier are vulnerable to a memory corruption issue affecting the handling of malicious SGI files, potentially leading to arbitrary code execution. This vulnerability requires user interaction to be exploited.

Understanding CVE-2021-40755

Adobe After Effects SGI File Parsing Memory Corruption Arbitrary Code Execution

What is CVE-2021-40755?

Adobe After Effects version 18.4.1 (and earlier) is impacted by a memory corruption vulnerability due to insecure handling of malicious SGI files in the DoReadContinue function.
The vulnerability can result in arbitrary code execution in the user's context, requiring user interaction for exploitation.

The Impact of CVE-2021-40755

CVSS Score: 7.8 (High)
Attack Vector: Local
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
Confidentiality, Integrity, and Availability Impact: High
Scope: Unchanged
This vulnerability poses a significant risk due to its high severity impact.

Technical Details of CVE-2021-40755

Vulnerability Description

The vulnerability arises from the insecure handling of a malicious SGI file in the DoReadContinue function in Adobe After Effects.

Affected Systems and Versions

Affected Product: Adobe After Effects
Vendor: Adobe
Affected Versions:
Version <= 18.4.1
Version <= None
The vulnerability impacts all earlier versions

Exploitation Mechanism

Exploiting the vulnerability requires an attacker to trick a user into opening a malicious SGI file, leading to arbitrary code execution in the context of the current user.

Mitigation and Prevention

Immediate Steps to Take

Update Adobe After Effects to a patched version.
Exercise caution when opening files from untrusted sources.
Implement security awareness training to recognize and avoid potential threats.

Long-Term Security Practices

Regularly update software to the latest secure versions.
Utilize security tools to detect and prevent malicious activities.

Patching and Updates

Adobe has released security updates to address this vulnerability. Ensure prompt installation of the latest updates.