Privilege escalation in Openapi-Generator Openapi Generator
CVE-2021-21430
OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec. Using `File.createTempFile` in JDK will result in creating and using insecure temporary files that can leave application and system data vulnerable to attacks. Auto-generated code (Java, Scala) that deals with uploading or downloading binary data through API endpoints will create insecure temporary files during the process. Affected generators: `java` (jersey2, okhttp-gson (default library)), `scala-finch`. The issue has been patched with `Files.createTempFile` and released in the v5.1.0 stable version.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (32.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 32.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Openapi-Generator Openapi Generator
- Openapitools Openapi-Generator — versions < 5.1.0
Weakness classification (CWE)
References
- github.com/OpenAPITools/openapi-generator/security/advisories/GHSA-cqxr-xf2w-94… (Exploit, Third Party Advisory)
- github.com/OpenAPITools/openapi-generator/pull/8791 (Patch, Third Party Advisory)
- github.com/OpenAPITools/openapi-generator/pull/8787 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21430?
- CVE-2021-21430 is a medium-severity vulnerability in Openapi-Generator Openapi Generator, classified under Improper Privilege Management. CVSS score: 6.2/10. Published 2021-05-10.
- How severe is CVE-2021-21430?
- Medium severity. CVSS v3 base score is 6.2 out of 10.