CVE-2021-43756 Explained : Impact and Mitigation
Learn about CVE-2021-43756, a critical Adobe Media Encoder vulnerability allowing remote code execution. Find out its impact, affected versions, and mitigation steps.
Adobe Media Encoder Memory Corruption Vulnerability could lead to Remote Code Execution
Understanding CVE-2021-43756
What is CVE-2021-43756?
Adobe Media Encoder versions 22.0, 15.4.2 (and earlier) are affected by an Out-of-bounds Write vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
The Impact of CVE-2021-43756
- Base Score: 7.8 (High)
- Attack Vector: Local
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
- User Interaction Required for Exploitation
Technical Details of CVE-2021-43756
Vulnerability Description
The vulnerability is categorized as Out-of-bounds Write (CWE-787) leading to memory corruption.
Affected Systems and Versions
- Product: Adobe Media Encoder
- Vendor: Adobe
- Affected Versions: 22.0, 15.4.2 (and earlier)
Exploitation Mechanism
The attacker needs to trick a user into opening a specially crafted file to trigger the vulnerability.
Mitigation and Prevention
Immediate Steps to Take
- Update Adobe Media Encoder to version 15.4.3 or later.
- Be cautious when opening files from unknown or untrusted sources.
Long-Term Security Practices
- Regularly update software and apply security patches promptly.
- Educate users about safe browsing habits and potential risks.
Patching and Updates
Regularly check for software updates and apply patches to ensure the latest security fixes are in place.