CVE-2021-21364

Generated Code Contains Local Information Disclosure Vulnerability

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

swagger-codegen es un proyecto de código abierto que contiene un motor basado en plantillas para generar documentación, clientes API y stubs de servidor en diferentes idiomas al analizar su definición de OpenAPI/Swagger. En swagger-codegen versiones anteriores a 2.4.19, en sistemas tipo Unix, el directorio temporal del sistema es compartido entre todos los usuarios locales. Cuando son creados files/directories, las configuraciones predeterminadas de "umask" para el proceso son respetadas. Como resultado, por defecto, la mayoría de los procesos /apis crearán files/directories con los permisos "-rw-r - r -" y "drwxr-xr-x" respectivamente, a menos que una API que ajusta explícitamente permisos de archivos seguros sea usada. Debido a que esta vulnerabilidad impacta el código generado, el código generado seguirá siendo vulnerable hasta que sea corregido manualmente. Esta vulnerabilidad es corregida en versión 2.4.19. Tome en cuenta que esta es una vulnerabilidad diferente de CVE-2021-21363

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-12-22 CVE Reserved
2021-03-11 CVE Published
2023-03-08 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CWE-378: Creation of Temporary File With Insecure Permissions
CWE-732: Incorrect Permission Assignment for Critical Resource

CAPEC

References (2)

URL	Tag	Source
https://github.com/swagger-api/swagger-codegen/security/advisories/GHSA-hpv8-9rq5-hq7w	Mitigation

URL	Date	SRC

URL	Date	SRC
https://github.com/swagger-api/swagger-codegen/commit/35adbd552d5f99b3ff1e0e59da228becc85190f2	2022-10-21

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Smartbear Search vendor "Smartbear"		Swagger-codegen Search vendor "Smartbear" for product "Swagger-codegen"				< 2.4.19 Search vendor "Smartbear" for product "Swagger-codegen" and version " < 2.4.19"		-		Affected