CVE-2021-39141 Explained : Impact and Mitigation

XStream, a library to serialize objects to XML and back, is vulnerable to arbitrary code execution that can be exploited remotely.

Understanding CVE-2021-39141

XStream allows remote attackers to execute arbitrary code through manipulated input streams.

What is CVE-2021-39141?

XStream vulnerability permits attackers to load and execute malicious code remotely by manipulating input streams.

The Impact of CVE-2021-39141

The vulnerability has a CVSS base score of 8.5 (High).

Attack Vector: Network
Attack Complexity: High
Privileges Required: Low
User Interaction: None
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High

Technical Details of CVE-2021-39141

XStream vulnerability details are as follows:

Vulnerability Description

In XStream versions below 1.4.18, attackers can execute arbitrary code through manipulated input streams.

Affected Systems and Versions

Product: XStream
Vendor: x-stream
Affected Version: < 1.4.18

Exploitation Mechanism

Attackers manipulate input streams to load and execute code remotely.

Mitigation and Prevention

Implement the following steps to mitigate the vulnerability:

Immediate Steps to Take

Update XStream to version 1.4.18 or later.
Follow secure coding practices.

Long-Term Security Practices

Regularly update software components.
Enforce the principle of least privilege.

Patching and Updates

Apply security updates promptly to address the vulnerability.