CVE-2020-11980 : What You Need to Know

Apache Karaf up to version 4.2.8 is vulnerable to a security issue related to JMX authentication and authorization.

Understanding CVE-2020-11980

This CVE involves a vulnerability in Apache Karaf that allows unauthorized users with a 'viewer' role to perform certain actions that could lead to privilege escalation.

What is CVE-2020-11980?

The vulnerability in Apache Karaf allows users with a 'viewer' role to manipulate the MBean registry, potentially leading to privilege escalation.

The Impact of CVE-2020-11980

The vulnerability could be exploited for SSRF-style attacks and unauthorized manipulation of the MBean registry, posing a risk of privilege escalation.

Technical Details of CVE-2020-11980

Apache Karaf up to version 4.2.8 is affected by a vulnerability that allows unauthorized users to perform actions beyond their role permissions.

Vulnerability Description

The issue arises from the ability of users with a 'viewer' role to manipulate the MBean registry, potentially leading to privilege escalation.

Affected Systems and Versions

Product: Apache Karaf
Versions affected: Apache Karaf up to 4.2.8

Exploitation Mechanism

JMX authentication in Karaf uses JAAS, and authorization uses ACL files.
Unauthorized users with a 'viewer' role can exploit the vulnerability by invoking the MLet getMBeansFromURL method.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2020-11980.

Immediate Steps to Take

Update Apache Karaf to version 4.2.9 or newer to mitigate the vulnerability.

Long-Term Security Practices

Regularly review and update access control lists (ACLs) to limit unauthorized access.
Monitor and restrict actions that could lead to privilege escalation.

Patching and Updates

Stay informed about security updates and patches released by Apache Karaf to address vulnerabilities like CVE-2020-11980.