CVE-2017-18588 : Security Advisory and Response

The security-framework crate for Rust, specifically versions prior to 0.1.12, has a identified problem where hostname verification for certificates does not occur when ClientBuilder uses custom root certificates.

Understanding CVE-2017-18588

This CVE identifies a vulnerability in the security-framework crate for Rust that affects versions before 0.1.12.

What is CVE-2017-18588?

This CVE pertains to a security issue in the Rust security-framework crate where hostname verification for certificates is bypassed if ClientBuilder utilizes custom root certificates.

The Impact of CVE-2017-18588

The vulnerability can potentially lead to man-in-the-middle attacks and compromise the security of communications relying on certificate validation.

Technical Details of CVE-2017-18588

The following technical details outline the specifics of CVE-2017-18588:

Vulnerability Description

The security-framework crate for Rust fails to verify the hostname of certificates when custom root certificates are used with ClientBuilder.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: All versions prior to 0.1.12

Exploitation Mechanism

Attackers can exploit this vulnerability by providing a malicious certificate with an incorrect hostname, which will not be properly validated by the security-framework crate.

Mitigation and Prevention

To address CVE-2017-18588, consider the following mitigation strategies:

Immediate Steps to Take

Upgrade to version 0.1.12 or later of the security-framework crate.
Avoid using custom root certificates with ClientBuilder until the issue is resolved.

Long-Term Security Practices

Regularly update dependencies to ensure the latest security patches are applied.
Implement additional security measures such as certificate pinning to enhance certificate validation.

Patching and Updates

Stay informed about security advisories and promptly apply patches released by the security-framework crate maintainers.