CVE-2021-45058 : Security Advisory and Response

Adobe InDesign version 16.4 (and earlier) is affected by an out-of-bounds write vulnerability that could lead to arbitrary code execution. User interaction is required for exploitation by opening a malicious JPEG file.

Understanding CVE-2021-45058

Adobe InDesign JPEG File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

What is CVE-2021-45058?

Adobe InDesign versions 16.4 and earlier have a vulnerability that allows an attacker to execute arbitrary code by exploiting an out-of-bounds write issue when a victim opens a crafted JPEG file.

The Impact of CVE-2021-45058

Base Score: 7.8 (High)
Severity: High
Successful exploitation can result in arbitrary code execution in the context of the current user, posing serious risks to confidentiality, integrity, and availability.

Technical Details of CVE-2021-45058

Vulnerability Description

The vulnerability in Adobe InDesign before version 16.4 allows an attacker to write outside the bounds of allocated memory, potentially leading to arbitrary code execution.

Affected Systems and Versions

Affected Product: InDesign (Adobe)
Affected Versions:
InDesign <= 16.4 (custom version)
InDesign <= None (custom version)

Exploitation Mechanism

Exploiting this vulnerability requires a victim to interact by opening a malicious JPEG file, triggering the out-of-bounds write and potentially allowing the execution of arbitrary code.

Mitigation and Prevention

Immediate Steps to Take

Update Adobe InDesign to the latest version to mitigate the vulnerability.
Exercise caution when opening JPEG files from untrusted sources to prevent potential exploitation.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Educate users about the risks of opening files from unknown or suspicious sources.

Patching and Updates

Apply security patches and updates provided by Adobe promptly to ensure protection against known vulnerabilities.