CVE-2020-14338 : Security Advisory and Response
Learn about CVE-2020-14338, a flaw in Wildfly's Xerces implementation allowing manipulation of validation processes through malicious XML files. Find mitigation steps and affected versions here.
A flaw in Wildfly's Xerces implementation allows manipulation of the validation process through specially-crafted XML files.
Understanding CVE-2020-14338
What is CVE-2020-14338?
This CVE refers to a vulnerability in Wildfly's Xerces implementation, affecting all Xerces JBoss versions before 2.12.0.SP3.
The Impact of CVE-2020-14338
The vulnerability allows for manipulation of the validation process using malicious XML files, potentially leading to security breaches.
Technical Details of CVE-2020-14338
Vulnerability Description
The flaw lies in the XMLSchemaValidator class in Wildfly's JAXP component, specifically in how it enforces the "use-grammar-pool-only" feature.
Affected Systems and Versions
- Product: Wildfly
- Vendor: n/a
- Versions Affected: All Xerces JBoss versions before 2.12.0.SP3
Exploitation Mechanism
The flaw enables specially-crafted XML files to influence the validation process, posing a security risk.
Mitigation and Prevention
Immediate Steps to Take
- Apply the recommended patches or updates provided by the vendor.
- Monitor for any unusual XML file activities.
Long-Term Security Practices
- Regularly update and patch software to prevent vulnerabilities.
- Implement strict XML file validation processes.
Patching and Updates
Ensure that the affected systems are updated to version 2.12.0.SP3 or later to mitigate the vulnerability.