Denial of Service Vulnerability in libxstream-java

libxstream-java Updated 02 Oct 2025

Summary

16/09/2022

Disclosed on

N/A

Severity

No i

Fix available

High

Severity

7.5

CVSS Score

CVE-2022-40151: Those using Xstream to seralize XML data may be vulnerable to Denial of Service attacks (DOS). Affects libxstream-java versions < f124f777fb8831430f930816a9e18813788c69cb. No fix is published. How to fix ↓

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Background

libxstream-java is a library used for serializing and deserializing XML data in Java applications. It provides a simple API for converting Java objects to XML and vice versa. The library is widely used in various Debian distributions, including Debian 10, 11, 12, and 13. However, it is vulnerable to a Denial of Service (DOS) attack.

Vulnerability Detail

The vulnerability, identified as CVE-2022-40151, arises when Xstream, the XML parser used by libxstream-java, processes user-supplied input. An attacker can exploit this vulnerability by providing malicious content that triggers a stack overflow, causing the parser to crash. This vulnerability can be leveraged to launch a DOS attack, rendering the affected application unresponsive.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

As a workaround, developers can implement input validation and sanitization mechanisms to filter out potentially malicious XML content. By carefully validating and sanitizing user input before passing it to the Xstream parser, the risk of triggering the vulnerability can be reduced. Here is an example of input validation code in Java:

String userInput = getUserInput();

if (isValidXML(userInput)) {
    // Process the XML
} else {
    // Handle invalid input
}

private boolean isValidXML(String input) {
    try {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        DocumentBuilder builder = factory.newDocumentBuilder();
        builder.parse(new InputSource(new StringReader(input)));
        return true;
    } catch (Exception e) {
        return false;
    }
}```

Conclusion

In conclusion, libxstream-java is vulnerable to a Denial of Service (DOS) attack due to a stack overflow issue in the Xstream parser. To mitigate this vulnerability, it is crucial to update the libxstream-java package to the latest version that includes a fix for CVE-2022-40151. Additionally, implementing input validation and sanitization mechanisms can provide temporary protection. For further assistance and support in vulnerability remediation, please contact DevNack.com.

See every vulnerability recorded for libxstream-java →