SB2020021309 - Multiple vulnerabilities in Pipeline GitHub Notify Step plugin for Jenkins

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Information disclosure (CVE-ID: CVE-2020-2118)

The vulnerability allows a remote user to gain access to potentially sensitive information.

The vulnerability exists due to the functionality, which provides a list of applicable credential IDs to allow users configuring the plugin to select the one to use, does not correctly check permissions. A remote user with Overall/Read permission can get a list of valid credentials IDs.

2) Improper access control (CVE-ID: CVE-2020-2117)

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

The vulnerability exists due to the affected software does not perform permission checks on a method implementing form validation. A remote user with Overall/Read access can connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.

3) Cross-site request forgery (CVE-ID: CVE-2020-2116)

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.

Remediation

Install update from vendor's website.

References

• http://www.openwall.com/lists/oss-security/2020/02/12/3
• https://jenkins.io/security/advisory/2020-02-12/#SECURITY-812%20(2)
• https://jenkins.io/security/advisory/2020-02-12/#SECURITY-812%20(1)