CVE-2018-20170 : What You Need to Know
Discover the user enumeration vulnerability in OpenStack Keystone up to version 14.0.1. Learn about the impact, affected systems, exploitation mechanism, and mitigation steps for CVE-2018-20170.
OpenStack Keystone through version 14.0.1 has a user enumeration vulnerability due to response time differences for valid and invalid usernames in a POST /v3/auth/tokens request.
Understanding CVE-2018-20170
A user enumeration vulnerability exists in OpenStack Keystone, impacting versions up to 14.0.1.
What is CVE-2018-20170?
The vulnerability arises from the varying response times for valid and invalid usernames in a specific request.
The Impact of CVE-2018-20170
The vendor views this as an opportunity for hardening rather than a critical issue requiring an OpenStack Security Advisory.
Technical Details of CVE-2018-20170
The vulnerability details and its implications.
Vulnerability Description
OpenStack Keystone up to version 14.0.1 is susceptible to a user enumeration vulnerability.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: Up to 14.0.1
Exploitation Mechanism
The vulnerability allows for user enumeration by observing response time differences for valid and invalid usernames.
Mitigation and Prevention
Steps to address and prevent the vulnerability.
Immediate Steps to Take
- Monitor and analyze response times for suspicious patterns.
- Implement rate limiting to prevent enumeration attacks.
Long-Term Security Practices
- Regularly review and update access controls.
- Conduct security training to raise awareness of enumeration risks.
Patching and Updates
Stay informed about security advisories and apply patches promptly.