CVE-2017-2784 : Exploit Details and Defense Strategies

A security flaw in ARM mbed TLS versions allows remote code execution through specially crafted x509 certificates.

Understanding CVE-2017-2784

This CVE involves a stack pointer vulnerability in the x509 certificate parsing code of ARM mbed TLS.

What is CVE-2017-2784?

The vulnerability affects ARM mbed TLS versions before 1.3.19, 2.x before 2.1.7, and 2.4.x before 2.4.2.
Attackers can exploit this flaw to execute remote code by sending malicious x509 certificates.

The Impact of CVE-2017-2784

CVSS Base Score: 8.1 (High)
Attack Vector: Network
Attack Complexity: High
Confidentiality, Integrity, and Availability Impact: High

Technical Details of CVE-2017-2784

This section provides more in-depth technical information about the vulnerability.

Vulnerability Description

The vulnerability involves a stack pointer issue in the x509 certificate parsing code of ARM mbed TLS.

Affected Systems and Versions

Affected Product: mbed TLS
Vendor: ARM
Vulnerable Versions: 2.4.0

Exploitation Mechanism

Attackers can exploit the vulnerability by sending specially crafted x509 certificates to vulnerable applications.

Mitigation and Prevention

Learn how to mitigate and prevent the exploitation of CVE-2017-2784.

Immediate Steps to Take

Update ARM mbed TLS to versions 1.3.19, 2.1.7, or 2.4.2 to patch the vulnerability.
Monitor network traffic for any signs of malicious x509 certificates.

Long-Term Security Practices

Regularly update software and firmware to prevent known vulnerabilities.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Stay informed about security advisories and patches released by ARM for mbed TLS.