CVE-2021-33609— Denial of service in DataCommunicator class in Vaadin 8
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-server是Vaadin开源的一个应用软件。一个用于在Java后端上快速开发Web应用程序的平台。 vaadin-server 中存在输入验证错误漏洞，该漏洞源于当提交过多的数据时会导致服务的DataCommunicator类中的堆错误。
Possible ATT&CK Techniques 1 AI
T1496 · Resource Hijacking
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I. Basic Information for CVE-2021-33609
Vulnerability Information
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Vulnerability Title
Denial of service in DataCommunicator class in Vaadin 8
Source: CVE Program / CVE List V5
Vulnerability Description
Missing check in DataCommunicator class in com.vaadin:vaadin-server versions 8.0.0 through 8.14.0 (Vaadin 8.0.0 through 8.14.0) allows authenticated network attacker to cause heap exhaustion by requesting too many rows of data.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
vaadin-server 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
vaadin-server是Vaadin开源的一个应用软件。一个用于在Java后端上快速开发Web应用程序的平台。 vaadin-server 中存在输入验证错误漏洞，该漏洞源于当提交过多的数据时会导致服务的DataCommunicator类中的堆错误。
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 | 8.0.0 ~ unspecified | - |
|
| Vaadin | vaadin-server | 8.0.0 ~ unspecified | - |
|
II. Public POCs for CVE-2021-33609
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Patches & Fixes for CVE-2021-33609 (1)
-
https://github.com/vaadin/framework/pull/12415 x_refsource_CONFIRM
Other References for CVE-2021-33609 (1)
-
https://vaadin.com/security/cve-2021-33609 x_refsource_CONFIRM
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V. Comments for CVE-2021-33609
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