CVE-2018-0488 : Security Advisory and Response

ARM mbed TLS versions prior to 1.3.22, 2.1.10, and 2.7.0 are vulnerable to remote attacks that can lead to arbitrary code execution or denial of service due to heap corruption.

Understanding CVE-2018-0488

This CVE involves a vulnerability in ARM mbed TLS versions before specific releases that can be exploited by attackers to execute arbitrary code or cause denial of service through crafted application packets within TLS or DTLS sessions.

What is CVE-2018-0488?

Attackers can exploit ARM mbed TLS versions before 1.3.22, 2.1.10, and 2.7.0 using crafted application packets in TLS or DTLS sessions.
The vulnerability involves the truncated HMAC extension and CBC, enabling arbitrary code execution or denial of service, particularly heap corruption.

The Impact of CVE-2018-0488

Remote attackers can execute arbitrary code or initiate denial of service attacks by exploiting this vulnerability.
The specific issue is heap corruption, which can lead to severe consequences for affected systems.

Technical Details of CVE-2018-0488

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

ARM mbed TLS versions before 1.3.22, 2.1.10, and 2.7.0 are susceptible to remote attacks due to the use of truncated HMAC extension and CBC in TLS or DTLS sessions.

Affected Systems and Versions

Products affected: ARM mbed TLS before 1.3.22, before 2.1.10, and before 2.7.0.

Exploitation Mechanism

Attackers exploit the vulnerability by sending crafted application packets within TLS or DTLS sessions, leveraging the truncated HMAC extension and CBC.

Mitigation and Prevention

Protecting systems from CVE-2018-0488 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update ARM mbed TLS to versions 1.3.22, 2.1.10, or 2.7.0 to mitigate the vulnerability.
Monitor network traffic for any suspicious activities that could indicate exploitation attempts.

Long-Term Security Practices

Regularly update and patch all software and firmware to prevent known vulnerabilities.
Implement network segmentation and access controls to limit the impact of potential attacks.
Conduct regular security assessments and penetration testing to identify and address security weaknesses.

Patching and Updates

Apply the latest patches and updates provided by ARM mbed TLS to address the vulnerability and enhance system security.