CVE-2021-3990 : What You Need to Know

A detailed analysis of the vulnerability in star7th/showdoc related to the use of a cryptographically weak pseudo-random number generator (PRNG).

Understanding CVE-2021-3990

This section provides insights into the CVE-2021-3990 vulnerability in star7th/showdoc.

What is CVE-2021-3990?

The CVE-2021-3990 vulnerability involves the use of a cryptographically weak pseudo-random number generator (PRNG) in star7th/showdoc, specifically affecting versions lower than 2.9.13.

The Impact of CVE-2021-3990

The vulnerability has a CVSS base score of 6.5, indicating a medium severity issue. It can be exploited with high attack complexity through network vectors, leading to low availability impact and confidentiality and integrity impacts.

Technical Details of CVE-2021-3990

Exploring the technical aspects of the CVE-2021-3990 vulnerability.

Vulnerability Description

The vulnerability arises from the use of a weak pseudo-random number generator, making systems susceptible to exploitation by malicious actors.

Affected Systems and Versions

Versions of star7th/showdoc prior to 2.9.13 are impacted by this vulnerability, necessitating immediate attention from users.

Exploitation Mechanism

Exploiting this vulnerability requires high attack complexity and can be done through network-based vectors, emphasizing the need for prompt mitigation.

Mitigation and Prevention

Protective measures and solutions to address the CVE-2021-3990 vulnerability.

Immediate Steps to Take

Users should update star7th/showdoc to version 2.9.13 or above to mitigate the risk of exploitation.

Long-Term Security Practices

Implement strong cryptographic mechanisms and conduct regular security audits to enhance the overall security posture of the system.

Patching and Updates

Regularly monitor for security patches and updates released by the vendor to stay protected against emerging threats.