Privilege escalation in Openapi-Generator Openapi Generator
CVE-2021-21428
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.
Vulnerability class: Privilege Escalation
EPSS: 0.004 (27.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.3 (Critical). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Openapi-generator Openapi_generator
- Openapitools Openapi-generator — versions < 5.1.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-21428?
- CVE-2021-21428 is a critical-severity vulnerability in Openapi-Generator Openapi Generator, classified under Improper Privilege Management. CVSS score: 9.3/10. Published 2021-05-10.
- How severe is CVE-2021-21428?
- Critical severity. CVSS v3 base score is 9.3 out of 10.