CVE-2020-2094 : Exploit Details and Defense Strategies

A missing permission check in Jenkins Health Advisor by CloudBees Plugin 3.0 and earlier allows attackers with Overall/Read permission to send a fixed email to an attacker-specific recipient.

Understanding CVE-2020-2094

This CVE involves a vulnerability in the Jenkins Health Advisor by CloudBees Plugin that could be exploited by attackers with specific permissions.

What is CVE-2020-2094?

The vulnerability in Jenkins Health Advisor by CloudBees Plugin version 3.0 and earlier enables attackers with Overall/Read permission to send a fixed email to a specific recipient.

The Impact of CVE-2020-2094

Attackers with the mentioned permissions can abuse this vulnerability to send unauthorized emails, potentially leading to information disclosure or further attacks.

Technical Details of CVE-2020-2094

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The vulnerability arises from a missing permission check in the affected plugin, allowing unauthorized email sending.

Affected Systems and Versions

Product: Jenkins Health Advisor by CloudBees Plugin
Vendor: Jenkins project
Versions Affected: <= 3.0

Exploitation Mechanism

Attackers with Overall/Read permission can exploit the vulnerability to send fixed emails to specific recipients.

Mitigation and Prevention

Protecting systems from CVE-2020-2094 requires immediate actions and long-term security practices.

Immediate Steps to Take

Upgrade the Jenkins Health Advisor by CloudBees Plugin to a patched version.
Restrict Overall/Read permissions to trusted users only.

Long-Term Security Practices

Regularly review and update permissions and access controls in Jenkins.
Monitor email sending activities for anomalies or unauthorized actions.

Patching and Updates

Ensure timely installation of security patches and updates for Jenkins and its plugins.