CVE-2021-39132

YAML deserialization can run untrusted code

Description

Rundeck is an open source automation service with a web console, command line tools and a WebAPI. Prior to version 3.3.14 and version 3.4.3, an authorized user can upload a zip-format plugin with a crafted plugin.yaml, or a crafted aclpolicy yaml file, or upload an untrusted project archive with a crafted aclpolicy yaml file, that can cause the server to run untrusted code on Rundeck Community or Enterprise Edition. An authenticated user can make a POST request, that can cause the server to run untrusted code on Rundeck Enterprise Edition. The zip-format plugin issues requires authentication and authorization to these access levels, and affects all Rundeck editions:`admin` level access to the `system` resource type. The ACL Policy yaml file upload issues requires authentication and authorization to these access levels, and affects all Rundeck editions: `create` `update` or `admin` level access to a `project_acl` resource, and/or`create` `update` or `admin` level access to the `system_acl` resource. The unauthorized POST request requires authentication, but no specific authorization, and affects Rundeck Enterprise only. Patches are available in versions 3.4.3, 3.3.14

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.48%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: rundeck rundeck
Published at:
Updated at:

References

Link Tags
https://github.com/rundeck/rundeck/security/advisories/GHSA-q4rf-3fhx-88pf third party advisory
https://github.com/rundeck/rundeck/commit/850d12e21d22833bc148b7f458d7cb5949f829b6 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-39132?
CVE-2021-39132 has been scored as a high severity vulnerability.
How to fix CVE-2021-39132?
To fix CVE-2021-39132, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-39132 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-39132 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-39132?
CVE-2021-39132 affects rundeck rundeck.
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