CVE-2021-21049 : Exploit Details and Defense Strategies

Adobe Photoshop versions 21.2.4 and 22.1.1 (and earlier) are affected by an Out-of-bounds Read vulnerability. This vulnerability could allow an unauthenticated attacker to execute arbitrary code in the context of the current user.

Understanding CVE-2021-21049

This CVE identifies a critical vulnerability in Adobe Photoshop that can lead to remote code execution.

What is CVE-2021-21049?

CVE-2021-21049 is an Out-of-bounds Read vulnerability found in Adobe Photoshop versions 21.2.4 and 22.1.1. It occurs when parsing a specially crafted file.

The Impact of CVE-2021-21049

The vulnerability poses a high risk with a CVSS base score of 7.8. It requires user interaction, where a victim must open a malicious file for exploitation.

Technical Details of CVE-2021-21049

This section delves into the specifics of the vulnerability.

Vulnerability Description

The vulnerability in Adobe Photoshop allows an attacker to achieve arbitrary code execution through crafted file parsing.

Affected Systems and Versions

Adobe Photoshop versions 21.2.4 and 22.1.1 (and earlier) are known to be impacted by this vulnerability.

Exploitation Mechanism

Exploiting this vulnerability requires a user to open a malicious file, enabling the attacker to execute arbitrary code.

Mitigation and Prevention

Here are steps to mitigate and prevent the exploitation of CVE-2021-21049.

Immediate Steps to Take

Users are advised to update Adobe Photoshop to a non-vulnerable version, avoid opening unknown files, and exercise caution when interacting with files from untrusted sources.

Long-Term Security Practices

Maintaining up-to-date software and employing cybersecurity best practices can help prevent similar vulnerabilities from being exploited.

Patching and Updates

Regularly check for security updates from Adobe and promptly apply them to ensure protection against known vulnerabilities.