CVE-2021-40690 : What You Need to Know

This CVE-2021-40690 article provides details about the vulnerability in Apache Santuario - XML Security for Java.

Understanding CVE-2021-40690

CVE-2021-40690 pertains to a vulnerability in Apache Santuario - XML Security for Java that allows attackers to bypass the secureValidation property.

What is CVE-2021-40690?

The vulnerability allows for incorrect passing of the "secureValidation" property when creating a KeyInfo from a KeyInfoReference element.
Attackers can exploit an XPath Transform to extract local .xml files in a RetrievalMethod element.

The Impact of CVE-2021-40690

Exposure of sensitive information to unauthorized actors due to the bypass of the secureValidation property.

Technical Details of CVE-2021-40690

This section dives into the specific technical aspects of the CVE.

Vulnerability Description

Apache Santuario - XML Security for Java versions prior to 2.2.3 and 2.1.7 are susceptible to the secureValidation property bypass.

Affected Systems and Versions

Vendor: Apache Software Foundation
Product: Apache Santuario
Affected Versions: XML Security for Java versions less than 2.2.3 and 2.1.7

Exploitation Mechanism

Attackers exploit an XPath Transform to extract local .xml files from a RetrievalMethod element.

Mitigation and Prevention

Learn how to protect your systems against CVE-2021-40690.

Immediate Steps to Take

Upgrade to Apache Santuario - XML Security for Java version 2.2.3 or higher.
Apply vendor patches and security updates promptly.

Long-Term Security Practices

Regularly monitor and audit security configurations.
Implement secure coding practices and input validation mechanisms.

Patching and Updates

Stay informed about security advisories from Apache and other relevant sources.
Continuously monitor for any new developments or patches related to this CVE.