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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.35%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.35% probability · 28th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-269, CWE-668
- Affected
- openapi-generator/openapi generator
- Source
- security-advisories@github.com
References
- https://github.com/OpenAPITools/openapi-generator/pull/8788Patch, Third Party Advisory
- https://github.com/OpenAPITools/openapi-generator/security/advisories/GHSA-23x4-m842-fmwfExploit, Third Party Advisory
- https://github.com/OpenAPITools/openapi-generator/pull/8788Patch, Third Party Advisory
- https://github.com/OpenAPITools/openapi-generator/security/advisories/GHSA-23x4-m842-fmwfExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.