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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTlqZzktNndtMi14N3A1

Server-Side Request Forgery in Karaf

In Karaf, JMX authentication takes place using JAAS and authorization takes place using ACL files. By default, only an "admin" can actually invoke on an MBean. However there is a vulnerability there for someone who is not an admin, but has a "viewer" role. In the 'etc/jmx.acl.cfg', such as role can call get*. It's possible to authenticate as a viewer role + invokes on the MLet getMBeansFromURL method, which goes off to a remote server to fetch the desired MBean, which is then registered in Karaf. At this point the attack fails as "viewer" doesn't have the permission to invoke on the MBean. Still, it could act as a SSRF style attack and also it essentially allows a "viewer" role to pollute the MBean registry, which is a kind of privilege escalation. The vulnerability is low as it's possible to add a ACL to limit access. Users should update to Apache Karaf 4.2.9 or newer.

Permalink: https://github.com/advisories/GHSA-9jg9-6wm2-x7p5
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTlqZzktNndtMi14N3A1
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: over 1 year ago
Updated: 4 months ago

CVSS Score: 6.3
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Identifiers: GHSA-9jg9-6wm2-x7p5, CVE-2020-11980
References:

• https://nvd.nist.gov/vuln/detail/CVE-2020-11980
• http://karaf.apache.org/security/cve-2020-11980.txt
• https://github.com/advisories/GHSA-9jg9-6wm2-x7p5

Affected Packages