CVE-2023-35173 : Security Advisory and Response
Discover the impact of CVE-2023-35173 on Nextcloud users due to improper access controls in the End-to-End encryption app. Learn about affected versions, exploitation, and mitigation steps.
This CVE involves an issue where end-to-end encrypted file-drops can be made inaccessible, impacting Nextcloud users. Read on to understand the details, impact, and mitigation strategies.
Understanding CVE-2023-35173
This section delves into the specifics of CVE-2023-35173 regarding Nextcloud's end-to-end encryption feature.
What is CVE-2023-35173?
CVE-2023-35173 highlights an improper access control vulnerability in the Nextcloud End-to-end encryption app, potentially allowing an attacker to render previously dropped files inaccessible.
The Impact of CVE-2023-35173
The vulnerability poses a high availability impact where attackers can leverage an invalid meta data file to disrupt file access, urging users to take immediate actions to secure their data.
Technical Details of CVE-2023-35173
Explore the technical aspects of CVE-2023-35173, understanding the vulnerability description, affected systems, and exploitation mechanism.
Vulnerability Description
Nextcloud's End-to-end encryption app is prone to improper access controls, enabling attackers to interfere with file accessibility by manipulating meta data files.
Affected Systems and Versions
Users utilizing Nextcloud's security-advisories product versions below 1.12.4 are susceptible to this vulnerability, emphasizing the significance of updating to the latest version for protection.
Exploitation Mechanism
By providing an invalid meta data file, threat actors can exploit this vulnerability to restrict access to previously dropped files within the Nextcloud platform.
Mitigation and Prevention
Learn how to mitigate the risks associated with CVE-2023-35173, securing your systems and data from potential exploitation.
Immediate Steps to Take
Users are advised to promptly upgrade the Nextcloud End-to-end encryption app to version 1.12.4 to safeguard against this vulnerability and prevent unauthorized file access.
Long-Term Security Practices
Incorporating robust access control measures and regularly updating software applications ensures a proactive defense against similar security threats in the future.
Patching and Updates
Regularly monitoring for security updates and applying patches promptly is crucial to maintaining the integrity and security of your systems.