CVE-2021-22912 : Vulnerability Insights and Analysis
Learn about CVE-2021-22912, an information disclosure vulnerability in Nextcloud iOS before 3.4.2 that exposes sensitive data during sharee searches. Find out how to mitigate the risk.
Nextcloud iOS before 3.4.2 has an information disclosure vulnerability when sharee searches use the lookup server by default. Here's a detailed overview of the CVE-2021-22912.
Understanding CVE-2021-22912
This section delves into what CVE-2021-22912 is and its impact.
What is CVE-2021-22912?
CVE-2021-22912 refers to an information disclosure vulnerability in the Nextcloud iOS app before version 3.4.2. It occurs when searches for sharees use the lookup server instead of the local Nextcloud server unless a global search is explicitly selected by the user.
The Impact of CVE-2021-22912
The vulnerability allows for the unintentional exposure of sensitive information during sharee searches in the Nextcloud iOS app, potentially putting user data at risk.
Technical Details of CVE-2021-22912
This section covers the specifics of the vulnerability, affected systems, and how it can be exploited.
Vulnerability Description
The vulnerability in Nextcloud iOS before 3.4.2 results in an information disclosure risk due to the default behavior of utilizing the lookup server for sharee searches.
Affected Systems and Versions
Nextcloud iOS app versions prior to 3.4.2 are affected by this vulnerability, with the issue being fixed in version 3.4.2.
Exploitation Mechanism
Attackers can exploit this vulnerability by leveraging the default behavior of sharee searches using the lookup server, potentially accessing sensitive information.
Mitigation and Prevention
In this section, you will find steps to mitigate the risks posed by CVE-2021-22912 and prevent similar vulnerabilities in the future.
Immediate Steps to Take
Users should update their Nextcloud iOS app to version 3.4.2 or newer to patch the vulnerability and prevent potential information disclosure.
Long-Term Security Practices
To enhance overall security, users are advised to regularly update their applications, follow secure browsing practices, and remain cautious while sharing sensitive information.
Patching and Updates
Regularly check for security updates from Nextcloud and apply patches promptly to ensure protection against known vulnerabilities.