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CVE-2021-31404— Timing side channel vulnerability in UIDL request handler in Vaadin 10, 11-14, and 15-18

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 存在安全漏洞，该漏洞允许攻击者通过定时攻击猜测安全令牌。以下产品及版本受到影响：flow-server versions 1.0.0 through 1.0.13 (Vaadin 10.0.0 through 10.0.16), 1.1.0 prior to 2.0.0 (Vaadin 11 prior to 14), 2.0.0 through 2

CVSS 4.0 · Medium EPSS 0.21% · P10

Possible ATT&CK Techniques 1 AI

T1595 · Active Scanning
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I. Basic Information for CVE-2021-31404

Vulnerability Information
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Vulnerability Title
Timing side channel vulnerability in UIDL request handler in Vaadin 10, 11-14, and 15-18
Source: CVE Program / CVE List V5
Vulnerability Description
Non-constant-time comparison of CSRF tokens in UIDL request handler in com.vaadin:flow-server versions 1.0.0 through 1.0.13 (Vaadin 10.0.0 through 10.0.16), 1.1.0 prior to 2.0.0 (Vaadin 11 prior to 14), 2.0.0 through 2.4.6 (Vaadin 14.0.0 through 14.4.6), 3.0.0 prior to 5.0.0 (Vaadin 15 prior to 18), and 5.0.0 through 5.0.2 (Vaadin 18.0.0 through 18.0.5) allows attacker to guess a security token via timing attack.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过时间差异性导致的信息暴露
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 flow 存在安全漏洞，该漏洞允许攻击者通过定时攻击猜测安全令牌。以下产品及版本受到影响：flow-server versions 1.0.0 through 1.0.13 (Vaadin 10.0.0 through 10.0.16), 1.1.0 prior to 2.0.0 (Vaadin 11 prior to 14), 2.0.0 through 2
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 10.0.0 ~ * -
Vaadin flow-server 1.0.0 ~ * -

II. Public POCs for CVE-2021-31404

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III. Intelligence Information for CVE-2021-31404

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Patches & Fixes for CVE-2021-31404 (1)

Other References for CVE-2021-31404 (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-2021-31408 6.3 MEDIUM Server session is not invalidated when logout() helper method of Authentication module is
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-2021-31406 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-208

V. Comments for CVE-2021-31404

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