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CVE-2021-31411— Insecure temporary directory usage in frontend build functionality of Vaadin 14 and 15-19

Quick assessment

Affected
Vaadin Vaadin
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.

Vaadin flow是一个应用软件。Vaadin平台的Java框架，用于构建外观美观，性能良好并让您和您的用户感到满意的现代网站。 vaadin 存在安全漏洞，该漏洞允许本地用户在应用程序重建期间将恶意代码注入前端资源。以下产品及版本受到影响：flow-server versions 2.0.9 through 2.5.2 (Vaadin 14.0.3 through Vaadin 14.5.2), 3.0 prior to 6.0 (Vaadin 15 prior to 19), and 6.0.0

CVSS 6.3 · Medium EPSS 0.23% · P14

Possible ATT&CK Techniques 1 AI

T1195 · Supply Chain Compromise
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I. Basic Information for CVE-2021-31411

Vulnerability Information
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Vulnerability Title
Insecure temporary directory usage in frontend build functionality of Vaadin 14 and 15-19
Source: CVE Program / CVE List V5
Vulnerability Description
Insecure temporary directory usage in frontend build functionality of com.vaadin:flow-server versions 2.0.9 through 2.5.2 (Vaadin 14.0.3 through Vaadin 14.5.2), 3.0 prior to 6.0 (Vaadin 15 prior to 19), and 6.0.0 through 6.0.5 (Vaadin 19.0.0 through 19.0.4) allows local users to inject malicious code into frontend resources during application rebuilds.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在具有不安全权限的目录中创建临时文件
Source: CVE Program / CVE List V5
Vulnerability Title
Vaadin flow 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Vaadin flow是一个应用软件。Vaadin平台的Java框架，用于构建外观美观，性能良好并让您和您的用户感到满意的现代网站。 vaadin 存在安全漏洞，该漏洞允许本地用户在应用程序重建期间将恶意代码注入前端资源。以下产品及版本受到影响：flow-server versions 2.0.9 through 2.5.2 (Vaadin 14.0.3 through Vaadin 14.5.2), 3.0 prior to 6.0 (Vaadin 15 prior to 19), and 6.0.0
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
Vaadin Vaadin 14.0.3 ~ * -
Vaadin flow-server 2.0.9 ~ * -

II. Public POCs for CVE-2021-31411

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III. Intelligence Information for CVE-2021-31411

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Patches & Fixes for CVE-2021-31411 (1)

Other References for CVE-2021-31411 (1)

IV. Related Vulnerabilities

Same product: Vaadin
Same vendor: Vaadin
Same weakness: CWE-379

V. Comments for CVE-2021-31411

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