CVE-2021-39132 YAML deserialization can run untrusted code

2021-08-3019:35:10

CWE-502

GitHub_M

www.cve.org

yaml deserialization

rundeck

vulnerability

unauthorized code execution

zip-format plugin

aclpolicy yaml file

authentication

authorization

post request

patch

version 3.4.3

version 3.3.14

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

AI Score

Confidence

High

EPSS

0.001

Percentile

43.7%

JSON

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/orcreate 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

CNA Affected

[
  {
    "product": "rundeck",
    "vendor": "rundeck",
    "versions": [
      {
        "status": "affected",
        "version": "< 3.3.14"
      },
      {
        "status": "affected",
        "version": ">= 3.4.0, < 3.4.3"
      }
    ]
  }
]