CVE-2021-24119 : Exploit Details and Defense Strategies
Learn about CVE-2021-24119, a side-channel vulnerability in Trusted Firmware Mbed TLS 2.24.0 that exposes RSA keys to system-level attackers. Explore its impact, technical details, and mitigation steps.
A side-channel vulnerability in Trusted Firmware Mbed TLS 2.24.0 could allow system-level attackers to extract secret RSA keys. Find out more about CVE-2021-24119, its impact, technical details, and mitigation steps.
Understanding CVE-2021-24119
Trusted Firmware Mbed TLS 2.24.0 is affected by a side-channel vulnerability that exposes RSA keys to potential extraction by attackers. Learn more about this security issue.
What is CVE-2021-24119?
CVE-2021-24119 is a side-channel vulnerability in base64 PEM file decoding in Trusted Firmware Mbed TLS 2.24.0. This flaw enables system-level attackers to gather information about secret RSA keys through controlled-channel and side-channel attacks.
The Impact of CVE-2021-24119
The vulnerability poses a significant risk as it allows attackers to conduct software-related attacks in isolated environments, particularly affecting Intel SGX. The exploit can lead to the unauthorized extraction of sensitive RSA keys.
Technical Details of CVE-2021-24119
Understand the vulnerability at a deeper level by exploring its technical aspects.
Vulnerability Description
The vulnerability arises due to a flaw in base64 PEM file decoding in Trusted Firmware Mbed TLS 2.24.0, enabling attackers to perform side-channel attacks to extract secret RSA keys.
Affected Systems and Versions
All versions of Trusted Firmware Mbed TLS 2.24.0 are affected by this vulnerability, exposing systems to potential RSA key extraction.
Exploitation Mechanism
Attackers utilize controlled-channel and side-channel attack methods on the software operating in isolated environments, such as Intel SGX, to retrieve secret RSA keys.
Mitigation and Prevention
Discover the steps to mitigate the risks associated with CVE-2021-24119 and prevent potential exploitation.
Immediate Steps to Take
System administrators should apply security updates promptly, monitor for any unauthorized access or key compromises, and restrict access to sensitive RSA keys.
Long-Term Security Practices
Implement robust encryption practices, regularly update cryptographic libraries, and conduct security assessments to identify and address vulnerabilities proactively.
Patching and Updates
Stay informed about security updates and patches released by Trusted Firmware Mbed TLS to address CVE-2021-24119 and other potential vulnerabilities.