CVE-2019-3890 : What You Need to Know

Evolution-ews prior to version 3.31.3 has a vulnerability due to the absence of SSL certificate validation, potentially allowing malicious actors to access sensitive data.

Understanding CVE-2019-3890

Evolution-ews version 3.31.3 and below are affected by a critical security flaw related to SSL certificate validation.

What is CVE-2019-3890?

The vulnerability in evolution-ews before version 3.31.3 arises from the lack of SSL certificate validation. This flaw could be exploited by attackers to intercept sensitive information by tricking users into connecting to a fake server.

The Impact of CVE-2019-3890

The vulnerability poses a high risk with a CVSS base score of 8.1, impacting confidentiality and integrity. Attackers could exploit this to obtain sensitive data without user detection.

Technical Details of CVE-2019-3890

Evolution-ews version 3.31.3 and below are susceptible to exploitation due to SSL certificate validation issues.

Vulnerability Description

Evolution-ews fails to validate SSL certificates, enabling attackers to intercept data by deceiving users into connecting to malicious servers.

Affected Systems and Versions

Product: evolution-ews
Vendor: The Gnome Project
Versions Affected: up to 3.31.3

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
User Interaction: Required
Scope: Unchanged
Privileges Required: None
Impact: High on Confidentiality and Integrity

Mitigation and Prevention

Immediate action is crucial to mitigate the risks posed by CVE-2019-3890.

Immediate Steps to Take

Update evolution-ews to version 3.31.3 or newer to patch the SSL certificate validation issue.
Educate users to be cautious while connecting to servers and verify SSL certificates.

Long-Term Security Practices

Implement secure coding practices to validate SSL certificates in all applications.
Regularly monitor and update SSL certificates to ensure secure connections.
Conduct security awareness training to educate users on identifying potential threats.

Patching and Updates

Stay informed about security advisories from vendors like The Gnome Project and Red Hat.
Apply patches promptly to address known vulnerabilities and enhance system security.