CVE-2017-2390 : What You Need to Know

CVE-2017-2390 was published on April 2, 2017, and affects specific Apple devices running older versions of iOS, macOS, tvOS, and watchOS. The vulnerability stems from symlink mishandling in the 'libarchive' component, allowing local users to modify directory permissions.

Understanding CVE-2017-2390

This CVE entry highlights a security flaw in Apple products that could be exploited by local users to manipulate directory permissions on affected devices.

What is CVE-2017-2390?

The vulnerability in CVE-2017-2390 arises from the mishandling of symlinks in the 'libarchive' component of certain Apple devices, enabling unauthorized modification of directory permissions by local users.

The Impact of CVE-2017-2390

The vulnerability poses a risk to the integrity and security of affected Apple devices, potentially allowing unauthorized users to alter directory permissions through unspecified methods.

Technical Details of CVE-2017-2390

CVE-2017-2390 involves the following technical aspects:

Vulnerability Description

The flaw allows local users to change directory permissions on devices running iOS versions older than 10.3, macOS versions older than 10.12.4, tvOS versions older than 10.2, and watchOS versions older than 3.2.

Affected Systems and Versions

iOS versions older than 10.3
macOS versions older than 10.12.4
tvOS versions older than 10.2
watchOS versions older than 3.2

Exploitation Mechanism

The vulnerability enables local users to modify directory permissions through unspecified methods, potentially leading to unauthorized access and manipulation of sensitive data.

Mitigation and Prevention

To address CVE-2017-2390, consider the following mitigation strategies:

Immediate Steps to Take

Update affected devices to the latest OS versions that contain patches for the symlink mishandling issue.
Monitor and restrict user permissions to minimize the risk of unauthorized directory modifications.

Long-Term Security Practices

Implement regular security updates and patches to address known vulnerabilities promptly.
Educate users on safe computing practices and the importance of maintaining up-to-date software.

Patching and Updates

Apply security updates provided by Apple to address the symlink mishandling vulnerability and enhance the overall security posture of affected devices.