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CVE-2021-31408— Server session is not invalidated when logout() helper method of Authentication module is used in Vaadin 18-19

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:flow-client 存在代码问题漏洞，该漏洞允许本地攻击者在用户尝试注销后访问Fusion端点。

CVSS 6.3 · Medium EPSS 0.32% · P23

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-31408

Vulnerability Information
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Vulnerability Title
Server session is not invalidated when logout() helper method of Authentication module is used in Vaadin 18-19
Source: CVE Program / CVE List V5
Vulnerability Description
Authentication.logout() helper in com.vaadin:flow-client versions 5.0.0 prior to 6.0.0 (Vaadin 18), and 6.0.0 through 6.0.4 (Vaadin 19.0.0 through 19.0.3) uses incorrect HTTP method, which, in combination with Spring Security CSRF protection, allows local attackers to access Fusion endpoints after the user attempted to log out.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的会话过期机制
Source: CVE Program / CVE List V5
Vulnerability Title
Vaadin flow 代码问题漏洞
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:flow-client 存在代码问题漏洞，该漏洞允许本地攻击者在用户尝试注销后访问Fusion端点。
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 18.0.0 ~ * -
Vaadin flow-client 5.0.0 ~ * -

II. Public POCs for CVE-2021-31408

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III. Intelligence Information for CVE-2021-31408

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Patches & Fixes for CVE-2021-31408 (1)

Other References for CVE-2021-31408 (1)

Same Patch Batch · Vaadin · 2021-04-23 · 13 CVEs total

CVE-2021-31407 8.6 HIGH Server classes and resources exposure in OSGi applications using Vaadin 12-14 and 19
CVE-2021-31410 8.6 HIGH Project sources exposure in Vaadin Designer
CVE-2020-36320 7.5 HIGH Regular expression Denial of Service (ReDoS) in EmailValidator class in Vaadin 7
CVE-2021-31405 7.5 HIGH Regular expression denial of service (ReDoS) in EmailField component in Vaadin 14 and 15-1
CVE-2019-25027 6.1 MEDIUM Reflected cross-site scripting in default RouteNotFoundError view in Vaadin 10 and 11-13
CVE-2020-36321 5.9 MEDIUM Directory traversal in development mode handler in Vaadin 14 and 15-17
CVE-2019-25028 5.4 MEDIUM Stored cross-site scripting in Grid component in Vaadin 7 and 8
CVE-2021-31403 4.0 MEDIUM Timing side channel vulnerability in UIDL request handler in Vaadin 7 and 8
CVE-2021-31404 4.0 MEDIUM Timing side channel vulnerability in UIDL request handler in Vaadin 10, 11-14, and 15-18
CVE-2021-31406 4.0 MEDIUM Timing side channel vulnerability in endpoint request handler in Vaadin 15-19
CVE-2020-36319 3.1 LOW Potential sensitive data exposure in applications using Vaadin 15
CVE-2018-25007 2.6 LOW Unauthorized client-side property update in UIDL request handler in Vaadin 10 and 11

IV. Related Vulnerabilities

Same product: Vaadin
Same vendor: Vaadin
Same weakness: CWE-613

V. Comments for CVE-2021-31408

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