CVE-2021-21050 : What You Need to Know

Adobe Photoshop versions 21.2.4 and earlier, as well as 22.1.1 and earlier, are impacted by an Out-of-bounds Read vulnerability that could lead to remote code execution if exploited. This article delves into the specifics of CVE-2021-21050 to help users understand the risks and necessary precautions.

Understanding CVE-2021-21050

This section provides insights into the nature of the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2021-21050?

CVE-2021-21050 pertains to an Out-of-bounds Read vulnerability in Adobe Photoshop, where an attacker could execute arbitrary code by manipulating a specially crafted file. The exploitation requires user interaction, compelling victims to open malicious files.

The Impact of CVE-2021-21050

The vulnerability poses a high-risk scenario with a CVSS base score of 7.8 classified as 'High.' If successfully exploited, an attacker could achieve arbitrary code execution in the context of the current user, exposing data confidentiality and integrity to significant risks.

Technical Details of CVE-2021-21050

This section provides detailed technical information about the vulnerability, including its description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The Out-of-bounds Read vulnerability in Adobe Photoshop versions makes the application susceptible to remote code execution attacks initiated by processing a manipulated file. Attackers can exploit this flaw to compromise user systems and execute malicious code.

Affected Systems and Versions

Adobe Photoshop versions 21.2.4 and 22.1.1 are confirmed to be impacted by CVE-2021-21050. Users operating these versions are at risk of potential remote code execution attacks if exposed to malicious files.

Exploitation Mechanism

Successful exploitation of this vulnerability requires an unauthenticated attacker to trick users into opening a specially crafted file. Once the victim interacts with the malicious content, the attacker gains the opportunity to execute arbitrary code on the target system.

Mitigation and Prevention

This section outlines immediate steps to minimize the risk posed by CVE-2021-21050, establish long-term security practices, and ensure systems are regularly updated and patched.

Immediate Steps to Take

Users of Adobe Photoshop should refrain from opening files from untrusted or unknown sources to prevent potential exploitation. It's crucial to exercise caution while interacting with external files to mitigate remote code execution risks.

Long-Term Security Practices

Adopting robust cybersecurity measures, such as keeping software up to date, implementing access controls, and conducting regular security awareness training, can enhance the overall security posture and reduce the likelihood of successful cyber attacks.

Patching and Updates

Adobe has released security updates to address CVE-2021-21050 in affected versions of Photoshop. Users are advised to apply the latest patches promptly to eliminate the vulnerability and safeguard their systems against potential threats.