CVE-2023-49790 : What You Need to Know

This article provides detailed information about CVE-2023-49790, focusing on the App PIN code bypass vulnerability in Nextcloud Files iOS.

Understanding CVE-2023-49790

This section dives into the specifics of the vulnerability and its impact.

What is CVE-2023-49790?

The Nextcloud iOS Files app allows users of iOS to interact with Nextcloud, a self-hosted productivity platform. Prior to version 4.9.2, the application can be used without providing the 4-digit PIN code. Nextcloud iOS Files app should be upgraded to 4.9.2 to receive the patch. No known workarounds are available.

The Impact of CVE-2023-49790

The vulnerability, categorized as CWE-287: Improper Authentication, has a CVSS base score of 4.3 (Medium severity). It can be exploited with low attack complexity and physical access, leading to low confidentiality, integrity, and availability impacts. No user interaction or special privileges are required.

Technical Details of CVE-2023-49790

This section outlines the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability in Nextcloud Files iOS app allows users to bypass the App PIN code, compromising security measures.

Affected Systems and Versions

Vendor: Nextcloud
Product: Security Advisories
Affected Version: < 4.9.2

Exploitation Mechanism

The vulnerability can be exploited by unauthorized users to access the application without the required PIN code.

Mitigation and Prevention

In this section, learn about the necessary steps to mitigate the risks posed by CVE-2023-49790.

Immediate Steps to Take

Upgrade Nextcloud iOS Files app to version 4.9.2 or later immediately.

Long-Term Security Practices

Regularly update the application to ensure known vulnerabilities are patched promptly.

Patching and Updates

Stay informed about security advisories and apply patches provided by Nextcloud promptly to ensure the security of your data and files.