CVE-2021-21090 : What You Need to Know

Adobe InCopy version 16.0 (and earlier) is affected by a path traversal vulnerability when parsing a crafted file. An unauthenticated attacker could leverage this vulnerability to achieve remote 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.

Understanding CVE-2021-21090

This CVE refers to a vulnerability in Adobe InCopy version 16.0 and earlier that could potentially lead to remote code execution.

What is CVE-2021-21090?

CVE-2021-21090 is a path traversal vulnerability in Adobe InCopy, allowing attackers to execute code remotely by manipulating a crafted file.

The Impact of CVE-2021-21090

The vulnerability poses a high risk with a base severity score of 8.8. This could lead to unauthorized remote code execution with high confidentiality and integrity impact.

Technical Details of CVE-2021-21090

This section covers specific technical details of the Adobe InCopy vulnerability.

Vulnerability Description

The vulnerability arises due to improper limitation of a pathname to a restricted directory (CWE-22), enabling path traversal when parsing files.

Affected Systems and Versions

Affected system: Adobe InCopy Affected versions: 16.0 and earlier

Exploitation Mechanism

Exploiting this vulnerability requires an unauthenticated attacker to manipulate a crafted file, tricking a victim into opening it.

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices are crucial to prevent exploitation of CVE-2021-21090.

Immediate Steps to Take

Users should refrain from opening files from untrusted sources, and deploy security patches provided by Adobe promptly.

Long-Term Security Practices

Regularly update Adobe InCopy to the latest secure version, employ network segmentation, and educate users about cybersecurity best practices.

Patching and Updates

Keep Adobe InCopy up to date with the latest security patches and follow Adobe's security advisories closely.