CVE-2020-2091: CSRF
A missing permission check in Jenkins Amazon EC2 Plugin 1.47 and earlier allows attackers with Overall/Read permission to connect to an attacker-specified URL within the AWS region using attacker-specified credentials IDs obtained through another method.
Other sources
Amazon EC2 Plugin 1.47 and earlier does not perform permission checks in methods performing form validation. This allows users with Overall/Read access to Jenkins to connect to an attacker-specified URL within the AWS region using attacker-specified credentials IDs obtained through another method.
This vulnerability might also allow attackers to capture credentials stored in Jenkins. We have not been able to confirm that this is possible.
Additionally, these form validation methods do not require POST requests, resulting in a CSRF vulnerability.
Amazon EC2 Plugin 1.48 requires POST requests and Overall/Administer permission for the affected form validation methods.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
maven/org.jenkins-ci.plugins:ec2to a version that resolves this vulnerability.Fixed in 1.48
Event History
Frequently Asked Questions
What is CVE-2020-2091?
CVE-2020-2091 is a vulnerability in Jenkins Amazon EC2 Plugin 1.47 and earlier that allows attackers with Overall/Read permission to connect to an attacker-specified URL within the AWS region using attacker-specified credentials IDs obtained through another method.
What is the severity of CVE-2020-2091?
The severity of CVE-2020-2091 is high with a CVSS score of 8.1.
How does CVE-2020-2091 affect Jenkins Amazon EC2 Plugin?
CVE-2020-2091 affects Jenkins Amazon EC2 Plugin versions 1.47 and earlier.
How can an attacker exploit CVE-2020-2091?
An attacker with Overall/Read permission can exploit CVE-2020-2091 by connecting to an attacker-specified URL within the AWS region using attacker-specified credentials IDs obtained through another method.
Is there a fix for CVE-2020-2091?
Yes, the fix for CVE-2020-2091 is available in Jenkins Amazon EC2 Plugin version 1.48 or later.