CVE-2021-21428 Creation of Temporary File in Directory with Insecure Permissions in the OpenAPI-Generator online generator

2021-05-1018:50:12

CWE-269

GitHub_M

www.cve.org

9.3 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.4 High

AI Score

Confidence

High

0.0005 Low

EPSS

Percentile

17.8%

JSON

Openapi generator is a java tool which allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec. openapi-generator-online creates insecure temporary folders with File.createTempFile during the code generation process. The insecure temporary folders store the auto-generated files which can be read and appended to by any users on the system. The issue has been patched with Files.createTempFile and released in the v5.1.0 stable version.

CNA Affected

[
  {
    "product": "openapi-generator",
    "vendor": "OpenAPITools",
    "versions": [
      {
        "status": "affected",
        "version": "< 5.1.0"
      }
    ]
  }
]