SB2021061107 - Multiple vulnerabilities in Jenkins XebiaLabs XL Deploy plugin

Description

This security bulletin contains information about 4 secuirty vulnerabilities.

1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2021-21662)

The vulnerability allows a remote attacker to gain access to sensitive information on the system.

The vulnerability exists due to the affected plugin does not perform a permission check in a method implementing form validation. A remote authenticated attacker can enumerate credentials IDs of credentials stored in Jenkins.

2) Improper access control (CVE-ID: CVE-2021-21663)

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to the affected plugin does not perform a permission check in a method implementing form validation. A remote authenticated attacker can connect to an attacker-specified URL and capture Username/password credentials stored in Jenkins.

3) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2021-21664)

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to incorrect permission check. A remote attacker can capture Username/password credentials stored in Jenkins.

4) Cross-site request forgery (CVE-ID: CVE-2021-21665)

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

Remediation

Install update from vendor's website.

References

• https://www.jenkins.io/security/advisory/2021-06-10/#SECURITY-1981
• http://www.openwall.com/lists/oss-security/2021/06/10/14
• https://www.jenkins.io/security/advisory/2021-06-10/#SECURITY-1982