CVE-2021-1740 : What You Need to Know

A parsing issue in the handling of directory paths in Apple's iOS, iPadOS, tvOS, watchOS, and macOS was addressed with improved path validation, allowing local users to potentially modify protected parts of the file system.

Understanding CVE-2021-1740

This CVE record details a vulnerability related to directory path handling in Apple operating systems.

What is CVE-2021-1740?

CVE-2021-1740 is a vulnerability that affects iOS, iPadOS, tvOS, watchOS, and macOS systems due to a parsing issue in directory path handling.

The Impact of CVE-2021-1740

The vulnerability allows local users to manipulate protected file system areas, posing a security risk to the integrity of the systems.

Technical Details of CVE-2021-1740

This section provides specific technical details of the CVE vulnerability.

Vulnerability Description

The vulnerability arises from inadequate processing of directory paths, which could be exploited by local users to modify critical file system components.

Affected Systems and Versions

iOS and iPadOS versions less than 14.5, tvOS versions less than 14.5, watchOS versions less than 7.4, macOS versions less than 11.3, and macOS versions less than 2021 are impacted by this vulnerability.

Exploitation Mechanism

The issue can be exploited by local users to access and tamper with protected areas of the file system.

Mitigation and Prevention

Learn how to protect your systems from potential exploitation of CVE-2021-1740.

Immediate Steps to Take

Update affected systems to the patched versions: iOS 14.5 and iPadOS 14.5, tvOS 14.5, watchOS 7.4, and macOS Big Sur 11.3.

Long-Term Security Practices

Implement stringent access controls and user permissions to prevent unauthorized file system modifications.

Patching and Updates

Regularly apply security updates from Apple to ensure vulnerabilities are promptly addressed.