Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2021-21430— Creation of Temporary File in Directory with Insecure Permissions in auto-generated Java, Scala code

Quick assessment

Affected
OpenAPITools openapi-generator
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenAPI Tools OpenAPI Generator是一款OpenAPI生成器。该产品允许在给定OpenAPI规范（v2，v3）的情况下自动生成API客户端库（SDK生成），服务器存根，文档和配置等。 Openapi generator 存在安全漏洞。该漏洞源于程序在创建不安全的临时目录时，这些临时文件可能会使应用程序和系统数据容易受到攻击。

CVSS 6.2 · Medium EPSS 0.40% · P33

Possible ATT&CK Techniques 1 AI

T1408
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2021-21430

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Creation of Temporary File in Directory with Insecure Permissions in auto-generated Java, Scala code
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
OpenAPI Tools OpenAPI Generator 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenAPI Tools OpenAPI Generator是一款OpenAPI生成器。该产品允许在给定OpenAPI规范（v2，v3）的情况下自动生成API客户端库（SDK生成），服务器存根，文档和配置等。 Openapi generator 存在安全漏洞。该漏洞源于程序在创建不安全的临时目录时，这些临时文件可能会使应用程序和系统数据容易受到攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenAPITools openapi-generator < 5.1.0 -

II. Public POCs for CVE-2021-21430

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2021-21430

请登录查看更多情报信息。

Patches & Fixes for CVE-2021-21430 (2)

Vendor Advisories for CVE-2021-21430 (1)

IV. Related Vulnerabilities

Same product: openapi-generator
Same vendor: OpenAPITools
Same weakness: CWE-269

V. Comments for CVE-2021-21430

No comments yet

Leave a comment