Paper/Archive/CVE-2021-21428

CVE-2021-21428

OpenAPITools openapi-generator — Creation of Temporary File in Directory with Insecure Permissions in the OpenAPI-Generator online generator

EPSS 0.4%CVSS 9.3

critical.is priorityof 100

CVSS 9.3 (CNA)9.3 / 10 × 3027.9 Not in CISA KEV+300.0 EPSS percentile 28.8.288 × 205.8 No public exploit+100.0 SSVC exploitation: unknown+100.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

openapi-generator< 5.1.0–CNA

Scores by source

GitHub_M (CNA)9.3CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References

refgithub.com/OpenAPITools/openapi-generator/security/advisories/GHSA-23x4-m842-fmwf refgithub.com/OpenAPITools/openapi-generator/pull/8788