CVE-2021-33575 : What You Need to Know

The Pixar ruby-jss gem before version 1.6.0 is vulnerable to remote code execution due to the Plist gem's use of Marshal.load during XML document processing.

Understanding CVE-2021-33575

This CVE details a vulnerability in the Pixar ruby-jss gem prior to version 1.6.0 that allows attackers to execute arbitrary code.

What is CVE-2021-33575?

The CVE-2021-33575 vulnerability exists in the use of the Plist gem's documented behavior, which leverages Marshal.load during XML document processing. This exploitable behavior enables remote attackers to run arbitrary code.

The Impact of CVE-2021-33575

The impact of this vulnerability is severe as it allows remote attackers to execute unauthorized code, potentially leading to system compromise and data breach.

Technical Details of CVE-2021-33575

This section provides technical insights into the vulnerability.

Vulnerability Description

The vulnerability arises from the handling of XML documents by the Plist gem, which leverages Marshal.load, opening the door for remote code execution.

Affected Systems and Versions

All versions of the Pixar ruby-jss gem before 1.6.0 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating XML documents to trigger the execution of arbitrary code through the Marshal.load function.

Mitigation and Prevention

To address CVE-2021-33575 and enhance system security, follow the mitigation and prevention measures below.

Immediate Steps to Take

Update the Pixar ruby-jss gem to version 1.6.0 or later to prevent exploitation of this vulnerability.
Avoid processing untrusted XML documents to minimize the risk of code execution.

Long-Term Security Practices

Regularly monitor for gem updates and security advisories to stay informed about potential vulnerabilities.
Implement robust input validation mechanisms to mitigate the risks associated with malicious inputs.

Patching and Updates

Apply patches and updates promptly to ensure that your systems are protected against known vulnerabilities.