CVE-2019-12423 : Security Advisory and Response
Learn about CVE-2019-12423 affecting Apache CXF. Understand the vulnerability, its impact, affected versions, and mitigation steps to secure your systems.
Apache CXF includes an OpenId Connect JWK Keys service that poses a security risk if configured improperly.
Understanding CVE-2019-12423
What is CVE-2019-12423?
Apache CXF allows clients to retrieve public keys in JWK format, which can be used to verify tokens. However, a vulnerability exists when obtaining keys from a JWK keystore file.
The Impact of CVE-2019-12423
The vulnerability could lead to information disclosure, exposing private and secret key credentials if the keystore file is configured incorrectly.
Technical Details of CVE-2019-12423
Vulnerability Description
- Apache CXF's OpenId Connect JWK Keys service can return private and secret key credentials if configured with a JWK keystore file.
Affected Systems and Versions
- All versions of Apache CXF prior to 3.3.5 and 3.2.12 are affected.
Exploitation Mechanism
- Keys, including private and secret key credentials, are returned if the keystore file is configured improperly.
Mitigation and Prevention
Immediate Steps to Take
- Upgrade to Apache CXF version 3.3.5 or 3.2.12.
- Specify an alias corresponding to the key's ID in the JWK file.
Long-Term Security Practices
- Regularly review and update configurations related to key management.
- Implement secure coding practices to prevent similar vulnerabilities.
Patching and Updates
- Apply patches provided by Apache to address the vulnerability.