CVE-2017-0895 : What You Need to Know
Learn about CVE-2017-0895 affecting Nextcloud Server versions before 10.0.4 and 11.0.2, exposing calendar and addressbook names to unauthorized users. Find mitigation steps and preventive measures.
Nextcloud Server before versions 10.0.4 and 11.0.2 exposes calendar and addressbook names to other logged-in users, potentially compromising user privacy.
Understanding CVE-2017-0895
Nextcloud Server versions prior to 10.0.4 and 11.0.2 are affected by an information exposure vulnerability that allows users to view calendar and addressbook names of other logged-in users.
What is CVE-2017-0895?
This CVE refers to the vulnerability in Nextcloud Server versions before 10.0.4 and 11.0.2 that exposes calendar and addressbook names to unauthorized users.
The Impact of CVE-2017-0895
The vulnerability could lead to a breach of user privacy as calendar and addressbook names are disclosed to other users who are currently logged in. However, the actual content within the calendar and addressbook remains protected.
Technical Details of CVE-2017-0895
Nextcloud Server's vulnerability exposes calendar and addressbook names, potentially compromising user privacy.
Vulnerability Description
The vulnerability in Nextcloud Server versions before 10.0.4 and 11.0.2 allows unauthorized users to access calendar and addressbook names of other logged-in users.
Affected Systems and Versions
- Product: Nextcloud Server
- Vendor: Nextcloud
- Vulnerable Versions: Before 10.0.4 and 11.0.2
Exploitation Mechanism
Unauthorized users who are logged into Nextcloud Server versions before 10.0.4 and 11.0.2 can exploit this vulnerability to view calendar and addressbook names of other users.
Mitigation and Prevention
Immediate action is necessary to secure affected systems and prevent further exploitation.
Immediate Steps to Take
- Upgrade Nextcloud Server to version 10.0.4 or 11.0.2 to mitigate the vulnerability.
- Regularly monitor and review access logs for any unauthorized activities.
Long-Term Security Practices
- Implement access controls to restrict user permissions and access to sensitive data.
- Conduct regular security audits and penetration testing to identify and address potential vulnerabilities.
Patching and Updates
- Stay informed about security advisories and updates from Nextcloud to promptly apply patches and fixes to secure the system.