CVE-2021-40777 : Vulnerability Insights and Analysis

Adobe Media Encoder version 15.4.1 (and earlier) is affected by a memory corruption vulnerability due to insecure handling of a malicious file, potentially resulting in arbitrary code execution in the context of the current user. User interaction is required to exploit this vulnerability.

Understanding CVE-2021-40777

Adobe Media Encoder WAV file memory corruption vulnerability could lead to arbitrary code execution.

What is CVE-2021-40777?

Adobe Media Encoder version 15.4.1 (and earlier) is susceptible to memory corruption due to insecure file handling, allowing potential arbitrary code execution in the user's context.
This vulnerability necessitates user interaction for exploitation.

The Impact of CVE-2021-40777

CVSS Score: 7.8 (High)
CVSS Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Severity: High
Attack Complexity: Low
Attack Vector: Local
Privileges Required: None
User Interaction: Required
Confidentiality, Integrity, and Availability Impact: High

Technical Details of CVE-2021-40777

Adobe Media Encoder is affected by a memory corruption vulnerability in handling WAV files.

Vulnerability Description

This CVE is categorized as CWE-788: Access of Memory Location After End of Buffer.

Affected Systems and Versions

Affected Product: Media Encoder
Vendor: Adobe
Affected Versions:
Media Encoder 15.4.1 and earlier
Unspecified versions

Exploitation Mechanism

The vulnerability occurs due to insecure handling of WAV files, leading to memory corruption and potential arbitrary code execution.

Mitigation and Prevention

Implement the following steps to mitigate the risks associated with CVE-2021-40777:

Immediate Steps to Take

Update Adobe Media Encoder to the latest version.
Avoid opening suspicious or untrusted WAV files.
Consider limiting user permissions to minimize the impact of potential exploits.

Long-Term Security Practices

Regularly update software and enable automatic updates where possible.
Educate users about phishing tactics and the risks of interacting with unknown files.

Patching and Updates

Apply patches provided by Adobe to address the memory corruption vulnerability in Media Encoder.