CVE-2020-36316 Explained : Impact and Mitigation

In RELIC before 2021-04-03, a buffer overflow vulnerability in PKCS#1 v1.5 signature verification allows for the presence of garbage bytes.

Understanding CVE-2020-36316

In this CVE, a specific version of RELIC is susceptible to a buffer overflow issue during PKCS#1 v1.5 signature verification.

What is CVE-2020-36316?

The vulnerability in RELIC before 2021-04-03 permits the inclusion of garbage bytes, leading to a buffer overflow in PKCS#1 v1.5 signature verification.

The Impact of CVE-2020-36316

The presence of this vulnerability could potentially allow attackers to exploit the buffer overflow, compromising the integrity and security of the system.

Technical Details of CVE-2020-36316

This section delves into the technical aspects of the CVE.

Vulnerability Description

A buffer overflow vulnerability exists in RELIC before 2021-04-03 due to improper handling of garbage bytes during PKCS#1 v1.5 signature verification.

Affected Systems and Versions

Affected Systems: RELIC before 2021-04-03
Affected Versions: Not specified

Exploitation Mechanism

The vulnerability can be exploited by injecting specially crafted data containing garbage bytes, triggering a buffer overflow.

Mitigation and Prevention

Protecting systems from CVE-2020-36316 requires immediate actions and long-term security measures.

Immediate Steps to Take

Update RELIC to the latest version post 2021-04-03 to mitigate the buffer overflow vulnerability.
Implement input validation mechanisms to prevent the injection of malicious data.

Long-Term Security Practices

Regularly monitor and audit the codebase for vulnerabilities and apply security patches promptly.
Conduct security training for developers to enhance awareness of secure coding practices.

Patching and Updates

Apply patches released by RELIC post 2021-04-03 to address the buffer overflow vulnerability.