CVE-2019-3685 : What You Need to Know

Open Build Service before version 0.165.4 did not validate TLS certificates for HTTPS connections with the osc client binary.

Understanding CVE-2019-3685

TLS certificates were not validated for HTTPS connections with the osc client binary in Open Build Service up to version 0.165.4.

What is CVE-2019-3685?

This CVE refers to the lack of TLS certificate validation for HTTPS connections in the osc client binary of Open Build Service versions prior to 0.165.4.

The Impact of CVE-2019-3685

The vulnerability has a CVSS base score of 7.4, indicating a high severity issue with significant confidentiality and integrity impacts. The attack complexity is high, and it can be exploited over a network without requiring privileges.

Technical Details of CVE-2019-3685

Vulnerability Description

The osc client binary in Open Build Service did not properly validate TLS certificates for HTTPS connections, leaving the system vulnerable to potential man-in-the-middle attacks.

Affected Systems and Versions

Product: Open Build Service
Vendor: Open Build Service
Versions Affected: up to 0.165.4

Exploitation Mechanism

The vulnerability can be exploited by an attacker intercepting HTTPS connections due to the lack of TLS certificate validation, potentially leading to unauthorized access or data manipulation.

Mitigation and Prevention

Immediate Steps to Take

Upgrade Open Build Service to version 0.165.4 or newer to ensure TLS certificate validation for HTTPS connections.
Monitor network traffic for any suspicious activity that could indicate exploitation of the vulnerability.

Long-Term Security Practices

Implement strict certificate validation practices for all network communications within the organization.
Conduct regular security audits and assessments to identify and address any similar vulnerabilities in the system.

Patching and Updates

Apply security patches and updates provided by Open Build Service promptly to address known vulnerabilities and enhance system security.