CVE-2018-0487 : Vulnerability Insights and Analysis

ARM mbed TLS versions before 1.3.22, 2.1.10, and 2.7.0 are vulnerable to remote code execution and service disruption due to a buffer overflow when handling specially crafted certificate chains.

Understanding CVE-2018-0487

Versions of ARM mbed TLS prior to 1.3.22, 2.1.10, and 2.7.0 have a critical vulnerability that allows attackers to execute unauthorized code or disrupt services by exploiting a buffer overflow.

What is CVE-2018-0487?

Vulnerability in ARM mbed TLS versions before 1.3.22, 2.1.10, and 2.7.0
Enables remote attackers to execute unauthorized code or disrupt services
Exploited by manipulating a specially crafted certificate chain mishandled during RSASSA-PSS signature verification

The Impact of CVE-2018-0487

Remote code execution and service disruption possible
Attackers can exploit buffer overflow to compromise systems

Technical Details of CVE-2018-0487

ARM mbed TLS vulnerability details

Vulnerability Description

Buffer overflow vulnerability in ARM mbed TLS
Occurs during the verification of RSASSA-PSS signatures in TLS or DTLS sessions

Affected Systems and Versions

ARM mbed TLS versions before 1.3.22, 2.1.10, and 2.7.0

Exploitation Mechanism

Attackers exploit a specially crafted certificate chain
Manipulation leads to buffer overflow and unauthorized code execution

Mitigation and Prevention

Protecting systems from CVE-2018-0487

Immediate Steps to Take

Update ARM mbed TLS to versions 1.3.22, 2.1.10, or 2.7.0
Monitor network traffic for signs of exploitation
Implement network segmentation to limit the impact of potential attacks

Long-Term Security Practices

Regularly update software and firmware to patch vulnerabilities
Conduct security assessments and penetration testing to identify weaknesses

Patching and Updates

Apply security patches provided by ARM mbed TLS
Stay informed about security advisories and updates from trusted sources