CVE-2020-36315 : What You Need to Know

In RELIC before 2020-08-01, RSA PKCS#1 v1.5 signature forgery can occur due to inadequate padding checks, especially with a low public exponent like 3.

Understanding CVE-2020-36315

In this CVE, a vulnerability in RELIC before 2020-08-01 could lead to RSA PKCS#1 v1.5 signature forgery under specific conditions.

What is CVE-2020-36315?

The vulnerability arises from insufficient padding checks in RELIC, potentially allowing RSA PKCS#1 v1.5 signature forgery with a low public exponent.
Exploiting this issue requires the use of a low public exponent, such as 3, which the product does not generate by default.

The Impact of CVE-2020-36315

Attackers could forge RSA PKCS#1 v1.5 signatures under specific circumstances, potentially leading to unauthorized access or data manipulation.

Technical Details of CVE-2020-36315

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

Vulnerability Description

In RELIC before 2020-08-01, inadequate padding checks can result in RSA PKCS#1 v1.5 signature forgery.

Affected Systems and Versions

Product: N/A
Vendor: N/A
Versions: N/A

Exploitation Mechanism

The vulnerability can be exploited by utilizing a low public exponent, such as 3, in RSA keys.

Mitigation and Prevention

Protecting systems from CVE-2020-36315 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update RELIC to a version that addresses the RSA PKCS#1 v1.5 signature forgery vulnerability.
Avoid using low public exponents like 3 in RSA keys.

Long-Term Security Practices

Regularly monitor for security updates and patches for RELIC.
Implement secure RSA key generation practices to prevent similar vulnerabilities.

Patching and Updates

Apply patches or updates provided by RELIC to mitigate the RSA PKCS#1 v1.5 signature forgery vulnerability.