CVE-2020-8632 : Vulnerability Insights and Analysis

In cloud-init through 19.4, rand_user_password in cloudinit/config/cc_set_passwords.py has a small default pwlen value, which makes it easier for attackers to guess passwords.

Understanding CVE-2020-8632

This CVE identifies a vulnerability in cloud-init that could potentially lead to password guessing attacks.

What is CVE-2020-8632?

The vulnerability in cloud-init through version 19.4 allows attackers to more easily guess passwords due to a small default pwlen value.

The Impact of CVE-2020-8632

The vulnerability increases the risk of successful password guessing attacks, potentially compromising system security.

Technical Details of CVE-2020-8632

This section provides detailed technical information about the CVE.

Vulnerability Description

The issue lies in the rand_user_password function in cloudinit/config/cc_set_passwords.py, where the small default pwlen value weakens password security.

Affected Systems and Versions

Affected systems include those running cloud-init through version 19.4.

Exploitation Mechanism

Attackers can exploit the vulnerability by leveraging the small default pwlen value to guess passwords more easily.

Mitigation and Prevention

Protect your systems from the CVE with these mitigation strategies.

Immediate Steps to Take

Update cloud-init to a version beyond 19.4 to mitigate the vulnerability.
Implement strong password policies to reduce the risk of password guessing attacks.

Long-Term Security Practices

Regularly review and update password policies to enhance system security.
Conduct security assessments to identify and address potential vulnerabilities.

Patching and Updates

Stay informed about security updates for cloud-init and promptly apply patches to address known vulnerabilities.