CVE-2021-21364

Generated Code Contains Local Information Disclosure Vulnerability

State: Published
Severity: 5.3 Medium
Published: Mar 11, 2021
Updated: Aug 3, 2024
Reserved: Dec 22, 2020

Description

swagger-codegen is an open-source project which contains a template-driven engine to generate documentation, API clients and server stubs in different languages by parsing your OpenAPI / Swagger definition. In swagger-codegen before version 2.4.19, on Unix-Like systems, the system temporary directory is shared between all local users. When files/directories are created, the default `umask` settings for the process are respected. As a result, by default, most processes/apis will create files/directories with the permissions `-rw-r--r--` and `drwxr-xr-x` respectively, unless an API that explicitly sets safe file permissions is used. Because this vulnerability impacts generated code, the generated code will remain vulnerable until fixed manually! This vulnerability is fixed in version 2.4.19. Note this is a distinct vulnerability from CVE-2021-21363.

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N	GitHub_M

Weaknesses

CWE-200 Information Exposure
CWE-378 Creation of Temporary File With Insecure Permissions
CWE-732 Incorrect Permission Assignment for Critical Resource

Affected Products

Product	Versions
swagger-codegenswagger-api	< 2.4.19Affected

References

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