CVE-2021-24117 : Vulnerability Insights and Analysis

Apache Teaclave Rust SGX SDK 1.1.3 is found to have a side-channel vulnerability in base64 PEM file decoding, enabling system-level attackers to access secret RSA keys. This vulnerability allows attackers to obtain sensitive information via controlled-channel and side-channel attacks, particularly on software operating in isolated environments like Intel SGX.

Understanding CVE-2021-24117

This section provides insights into the impact, technical details, and mitigation strategies related to CVE-2021-24117.

What is CVE-2021-24117?

CVE-2021-24117 is a side-channel vulnerability present in Apache Teaclave Rust SGX SDK 1.1.3, allowing system-level attackers to gather secret RSA keys through controlled-channel and side-channel attacks.

The Impact of CVE-2021-24117

The vulnerability poses a significant risk as it permits unauthorized access to sensitive RSA keys by exploiting the base64 PEM file decoding mechanism. Attackers with system-level privileges can carry out controlled-channel and side-channel attacks to extract critical information.

Technical Details of CVE-2021-24117

This section delves into the specific technical aspects of the vulnerability.

Vulnerability Description

The vulnerability in Apache Teaclave Rust SGX SDK 1.1.3 arises from a flaw in the base64 PEM file decoding process, enabling system-level adversaries to extract secret RSA keys through controlled-channel and side-channel attacks.

Affected Systems and Versions

The issue impacts Apache Teaclave Rust SGX SDK 1.1.3, making systems vulnerable to attacks where attackers can compromise secret RSA keys.

Exploitation Mechanism

Attackers with system-level access can exploit the vulnerability by conducting controlled-channel and side-channel attacks on software functioning within isolated environments like Intel SGX.

Mitigation and Prevention

To address CVE-2021-24117 and enhance system security, immediate steps and long-term protective measures are crucial.

Immediate Steps to Take

System administrators should apply relevant security patches promptly, restrict access to critical systems, monitor for unauthorized activities, and implement security controls.

Long-Term Security Practices

In the long run, organizations should emphasize regular security training for personnel, conduct periodic security audits, enforce the principle of least privilege, and stay informed about emerging threats.

Patching and Updates

Vendors must release patches addressing the vulnerability promptly, and organizations should ensure timely deployment of these patches to safeguard their systems.