CVE-2021-40703 : Security Advisory and Response
Learn about CVE-2021-40703 affecting Adobe Premiere Elements. Understand the impact, vulnerability description, affected versions, and mitigation steps.
Adobe Premiere Elements version 2021.2235820 (and earlier) is affected by a memory corruption vulnerability due to insecure handling of a malicious m4a file, potentially resulting in arbitrary code execution.
Understanding CVE-2021-40703
Adobe Premiere Elements m4a Memory Corruption Vulnerability Could Lead to Arbitrary Code Execution
What is CVE-2021-40703?
This CVE describes a memory corruption vulnerability in Adobe Premiere Elements versions including 2021.2235820 and earlier caused by unsafe processing of a malicious m4a file. This flaw could allow attackers to execute arbitrary code in the context of the current user.
The Impact of CVE-2021-40703
The impact of this vulnerability is rated as HIGH with a CVSS base score of 7.8. The following impacts are identified:
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
- Attack Vector: Local
- User Interaction: Required
Technical Details of CVE-2021-40703
Adobe Premiere Elements m4a Memory Corruption Vulnerability
Vulnerability Description
- Type: Access of Memory Location After End of Buffer (CWE-788)
Affected Systems and Versions
- Product: Not a product
- Vendor: Adobe
- Vulnerable Versions:
- Version 2021.2235820 and earlier
- Description: Memory corruption vulnerability due to insecure handling of malicious m4a file
Exploitation Mechanism
The vulnerability can be exploited by an attacker through user interaction, primarily by tricking the user into opening a malicious m4a file in Adobe Premiere Elements.
Mitigation and Prevention
Immediate Steps to Take
- Update Adobe Premiere Elements to the latest version to patch the vulnerability.
- Avoid opening m4a files from untrusted sources.
- Be cautious while interacting with unknown or suspicious files.
Long-Term Security Practices
- Regularly update software and applications to their latest versions.
- Implement security best practices to prevent memory corruption vulnerabilities.
Patching and Updates
- Adobe has released a security update to address the vulnerability. Ensure timely installation of this patch to secure the system.