SB2019121817 - Multiple vulnerabilities in Build Failure Analyzer plugin for Jenkins
Published: December 18, 2019
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Improper access control (CVE-ID: CVE-2019-16554)
The vulnerability allows a remote user 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 performing form validation. A remote authenticated user with Overall/Read access can have Jenkins evaluate a computationally expensive regular expression.
2) Resource exhaustion (CVE-ID: CVE-2019-16555)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a user-supplied regular expression is processed in a way that is not interruptible. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
3) Cross-site request forgery (CVE-ID: CVE-2019-16553)
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, such as supply a computationally expensive regular expression that will hang the request handling thread.
Remediation
Install update from vendor's website.