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CVE-2021-21006 Explained : Impact and Mitigation

Learn about CVE-2021-21006 impacting Adobe Photoshop versions 22.1 and earlier. Discover the severity, impact, and mitigation steps for this heap buffer overflow vulnerability.

Adobe Photoshop version 22.1 and earlier are impacted by a heap buffer overflow vulnerability when processing a specially crafted font file. This could potentially result in arbitrary code execution, requiring user interaction to open a malicious file.

Understanding CVE-2021-21006

This CVE describes a critical security vulnerability in Adobe Photoshop that could be exploited by a specially crafted font file to execute arbitrary code on the victim's system.

What is CVE-2021-21006?

The vulnerability in Adobe Photoshop version 22.1 and earlier allows for a heap buffer overflow, leading to the potential execution of arbitrary code if a malicious font file is opened. This exploitation requires user interaction from the victim.

The Impact of CVE-2021-21006

The impact of this vulnerability is classified as high severity, with a base score of 8.6 according to the CVSS v3.1 metrics. It affects confidentiality, integrity, and availability, requiring no special privileges for exploitation.

Technical Details of CVE-2021-21006

This section provides specific technical details about the vulnerability, affected systems, and how it can be exploited.

Vulnerability Description

The vulnerability is categorized as a heap-based buffer overflow (CWE-122) and affects Adobe Photoshop versions 22.1 and earlier. It can be triggered by a specially crafted font file.

Affected Systems and Versions

Adobe Photoshop versions 22.1 and earlier are impacted by this vulnerability, exposing users to the risk of arbitrary code execution.

Exploitation Mechanism

Successful exploitation of CVE-2021-21006 necessitates the user to open a malicious font file intentionally, granting the attacker an opportunity to execute arbitrary code on the victim's machine.

Mitigation and Prevention

To safeguard systems from potential exploitation of CVE-2021-21006, immediate actions need to be taken along with long-term security practices and applying necessary patches and updates.

Immediate Steps to Take

Users of Adobe Photoshop version 22.1 and earlier should exercise caution when handling font files and avoid opening files from untrusted sources.

Long-Term Security Practices

Implementing secure file handling practices, regularly updating security software, and staying informed about potential vulnerabilities are essential for long-term security.

Patching and Updates

Adobe may release security patches to address CVE-2021-21006. It is crucial for users to promptly apply these updates to mitigate the risk of exploitation.

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