CVE-2021-21345 : What You Need to Know
Learn about CVE-2021-21345 affecting XStream, a Java library for object serialization. Understand the impact, technical details, and mitigation steps for this Remote Command Execution vulnerability.
XStream, a Java library for object serialization, is found to have a vulnerability allowing a remote attacker to execute host commands by manipulating input streams. Follow security recommendations to mitigate this risk.
Understanding CVE-2021-21345
XStream vulnerability opens up a Remote Command Execution attack vector that can be exploited by malicious actors to execute commands on the host system.
What is CVE-2021-21345?
XStream, known for serialization of objects to XML, has a security flaw pre-version 1.4.16, enabling attackers to perform remote command execution.
The Impact of CVE-2021-21345
The vulnerability poses a high integrity impact and requires low privileges for exploitation. A remote attacker can execute host commands when manipulating input streams.
Technical Details of CVE-2021-21345
Explore the technical aspects and implications of this security flaw.
Vulnerability Description
The flaw in XStream < 1.4.16 permits remote command execution by manipulating input streams, potentially leading to unauthorized commands on the host system.
Affected Systems and Versions
XStream versions prior to 1.4.16 are affected by this vulnerability, putting systems at risk of remote command execution by malicious actors.
Exploitation Mechanism
Attackers with network access can exploit this vulnerability by manipulating input streams to execute arbitrary commands on the host system.
Mitigation and Prevention
Discover strategies to mitigate the risks associated with CVE-2021-21345.
Immediate Steps to Take
Update XStream to version 1.4.16 or newer to patch the vulnerability and prevent remote command execution. Ensure security configurations follow whitelisting principles to minimize risks.
Long-Term Security Practices
Implement strict input validation, access controls, and regular security assessments to detect and address vulnerabilities promptly, minimizing the risk of remote command execution.
Patching and Updates
Stay informed about security advisories and updates related to XStream to address vulnerabilities promptly and maintain a secure system.