SB2020092221 - Multiple vulnerabilities in Jenkins ElasTest plugin

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Improper access control (CVE-ID: CVE-2020-2272)

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 user with Overall/Read permission can connect to an attacker-specified URL using attacker-specified credentials.

2) Cross-site request forgery (CVE-ID: CVE-2020-2273)

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

The vulnerability exists due to the form validation method does not require POST requests. 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.

3) Cleartext storage of sensitive information (CVE-ID: CVE-2020-2274)

The vulnerability allows a local user to view the password on the target system.

The vulnerability exists due to the affected software stores its server password in plain text in the global configuration file "jenkins.plugins.elastest.ElasTestInstallation.xml". A local user with access to the Jenkins controller file system can obtain credentials.

Remediation

Install update from vendor's website.

References

• http://www.openwall.com/lists/oss-security/2020/09/16/3
• https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-1903
• https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-2014