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CVE-2021-21067 : Vulnerability Insights and Analysis

Learn about CVE-2021-21067 in Adobe Photoshop. Understand the impact, technical details, and mitigation strategies to protect your systems from this vulnerability.

Adobe Photoshop versions 21.2.5 and earlier, and 22.2 and earlier, are affected by an Out-of-bounds Write vulnerability in the CoolType library. This vulnerability could allow an unauthenticated attacker to execute arbitrary code in the context of the current user by tricking the victim into opening a malicious file.

Understanding CVE-2021-21067

This section will delve into what CVE-2021-21067 entails, its impact, technical details, and mitigation techniques.

What is CVE-2021-21067?

CVE-2021-21067 is a vulnerability found in Adobe Photoshop versions 21.2.5 and 22.2, allowing attackers to manipulate the stack in Type 1/Multiple Master fonts, potentially leading to arbitrary code execution.

The Impact of CVE-2021-21067

The impact of this vulnerability is rated as HIGH, with a CVSS base severity score of 7.8. It poses a significant risk to confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2021-21067

This section will outline the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability involves an Out-of-bounds Write in the CoolType library of Adobe Photoshop, enabling attackers to tamper with the stack for malicious code execution.

Affected Systems and Versions

Adobe Photoshop versions 21.2.5 and 22.2, and potentially earlier versions, are affected by this security flaw.

Exploitation Mechanism

To exploit this vulnerability, an attacker would need to craft a malicious file that, once opened by a user, triggers the arbitrary code execution within the targeted system.

Mitigation and Prevention

Discover how to protect your systems from the CVE-2021-21067 vulnerability through immediate steps and long-term security best practices.

Immediate Steps to Take

Users are advised to apply security patches, exercise caution when opening unfamiliar files, and consider implementing additional security measures.

Long-Term Security Practices

Employ secure coding practices, regularly update software, conduct security assessments, and educate users on identifying and handling potential security threats.

Patching and Updates

Adobe has released patches addressing this vulnerability. Make sure to install the latest updates to safeguard your systems.

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