CVE-2021-45103 : Security Advisory and Response

An issue in HTCondor versions 9.0.x before 9.0.10 and 9.1.x before 9.5.1 allows attackers to access files in S3 cloud storage.

Understanding CVE-2021-45103

This CVE highlights a security vulnerability in HTCondor that could lead to unauthorized access to sensitive files.

What is CVE-2021-45103?

The CVE-2021-45103 vulnerability in HTCondor versions 9.0.x before 9.0.10 and 9.1.x before 9.5.1 enables attackers to retrieve files stored in S3 cloud storage that were requested to be transferred by HTCondor users.

The Impact of CVE-2021-45103

This vulnerability allows unauthorized parties to access potentially confidential or sensitive information stored in the S3 cloud storage, compromising data security.

Technical Details of CVE-2021-45103

This section outlines the technical aspects of the CVE.

Vulnerability Description

The issue in HTCondor versions 9.0.x and 9.1.x allows attackers to exploit the system to access files stored in S3 cloud storage initiated by a user's HTCondor transfer request.

Affected Systems and Versions

Vulnerable versions: 9.0.x before 9.0.10 and 9.1.x before 9.5.1
Systems using HTCondor with S3 cloud storage configurations

Exploitation Mechanism

Attackers can leverage the vulnerability to bypass security measures and access files in the S3 cloud storage intended for HTCondor transfers.

Mitigation and Prevention

Protect your systems from CVE-2021-45103 with the following measures:

Immediate Steps to Take

Update HTCondor to version 9.0.10 or 9.5.1 to mitigate the vulnerability
Restrict access to sensitive files and data

Long-Term Security Practices

Regularly monitor and audit S3 cloud storage access
Implement network segmentation to restrict unauthorized access

Patching and Updates

Apply security patches promptly
Stay informed about security updates from HTCondor to address potential vulnerabilities