CVE-2021-22913 : Security Advisory and Response

Nextcloud Deck before version 1.2.7 and 1.4.1 is affected by an information disclosure vulnerability, allowing searches for sharees to utilize the lookup server by default. This could lead to information leakage unless the user explicitly chooses a global search.

Understanding CVE-2021-22913

This CVE ID is associated with an information disclosure vulnerability in Nextcloud Deck.

What is CVE-2021-22913?

CVE-2021-22913 is an information disclosure vulnerability in Nextcloud Deck versions prior to 1.2.7 and 1.4.1. It allows searches for sharees to utilize the lookup server by default, potentially exposing sensitive information.

The Impact of CVE-2021-22913

The vulnerability could result in unauthorized access to confidential data during share searches, posing a risk to data privacy and security.

Technical Details of CVE-2021-22913

This section outlines the specifics of the vulnerability.

Vulnerability Description

Nextcloud Deck before version 1.2.7 and 1.4.1 suffers from an information disclosure vulnerability when share searches use the lookup server by default.

Affected Systems and Versions

Nextcloud Deck versions prior to 1.2.7 and 1.4.1 are impacted by this vulnerability.

Exploitation Mechanism

The vulnerability can be exploited by conducting share searches that default to the lookup server rather than the local server.

Mitigation and Prevention

It is crucial to take immediate action to prevent exploitation and enhance overall security measures.

Immediate Steps to Take

Users should update Nextcloud Deck to version 1.2.7 or 1.4.1 to mitigate the information disclosure risk.

Long-Term Security Practices

Implementing access controls and regular security audits can help prevent similar vulnerabilities in the future.

Patching and Updates

Regularly updating software and applying security patches is essential to safeguard against known vulnerabilities.