CVE-2018-3819 : Exploit Details and Defense Strategies
Learn about CVE-2018-3819 affecting Kibana versions before 6.1.3 and 5.6.7. Find out how attackers can exploit this open redirect vulnerability and steps to mitigate the risk.
CVE-2018-3819 was published on March 30, 2018, and affects Kibana versions prior to 6.1.3 and 5.6.7. The vulnerability allows malicious actors to create redirect links on the login page when X-Pack security is activated.
Understanding CVE-2018-3819
This CVE highlights a security flaw in Kibana versions that could be exploited by attackers to redirect users to malicious websites.
What is CVE-2018-3819?
The vulnerability in Kibana versions before 6.1.3 and 5.6.7 enables attackers to craft redirect links on the login page, posing a risk to system security.
The Impact of CVE-2018-3819
The security flaw allows malicious actors to create redirect links to any desired website, potentially leading to phishing attacks or the redirection of users to harmful content.
Technical Details of CVE-2018-3819
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The incomplete fix for ESA-2017-23 in Kibana versions prior to 6.1.3 and 5.6.7 allows for an open redirect vulnerability on the login page, facilitating the creation of malicious redirect links.
Affected Systems and Versions
- Product: Kibana
- Vendor: Elastic
- Versions Affected: All versions before 6.1.3 and 5.6.7
Exploitation Mechanism
When X-Pack security is activated, attackers can exploit the vulnerability by manipulating the login page to create redirect links to unauthorized websites.
Mitigation and Prevention
Protecting systems from CVE-2018-3819 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update Kibana to version 6.1.3 or 5.6.7 to mitigate the vulnerability.
- Disable X-Pack security if not essential for operations.
Long-Term Security Practices
- Regularly monitor and apply security patches to prevent similar vulnerabilities.
- Educate users about phishing attacks and the risks of clicking on unknown links.
Patching and Updates
- Elastic has released security updates for Kibana versions 6.1.3 and 5.6.7 to address the vulnerability.