CVE-2021-21364

Generated Code Contains Local Information Disclosure Vulnerability

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.

Categories

5.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.07%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: swagger-api swagger-codegen
Published at:
Updated at:

References

Link Tags
https://github.com/swagger-api/swagger-codegen/security/advisories/GHSA-hpv8-9rq5-hq7w third party advisory mitigation
https://github.com/swagger-api/swagger-codegen/commit/35adbd552d5f99b3ff1e0e59da228becc85190f2 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-21364?
CVE-2021-21364 has been scored as a medium severity vulnerability.
How to fix CVE-2021-21364?
To fix CVE-2021-21364, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-21364 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-21364 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21364?
CVE-2021-21364 affects swagger-api swagger-codegen.
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