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CVE-2021-21369— Potential DoS in Besu HTTP JSON-RPC API

Quick assessment

Affected
hyperledger besu
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.

Matkt Hyperledger Besu是 （Matkt）开源的一个应用程序。用于运行，维护，调试和监视以太坊网络中的节点。 Hyperledger Besu 存在安全漏洞，该漏洞源于单个用户很容易用无效的请求(不正确的密码)重载登录端点。

CVSS 6.5 · Medium EPSS 1.67% · P76
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I. Basic Information for CVE-2021-21369

Vulnerability Information
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Vulnerability Title
Potential DoS in Besu HTTP JSON-RPC API
Source: CVE Program / CVE List V5
Vulnerability Description
Hyperledger Besu is an open-source, MainNet compatible, Ethereum client written in Java. In Besu before version 1.5.1 there is a denial-of-service vulnerability involving the HTTP JSON-RPC API service. If username and password authentication is enabled for the HTTP JSON-RPC API service, then prior to making any requests to an API endpoint the requestor must use the login endpoint to obtain a JSON web token (JWT) using their credentials. A single user can readily overload the login endpoint with invalid requests (incorrect password). As the supplied password is checked for validity on the main vertx event loop and takes a relatively long time this can cause the processing of other valid requests to fail. A valid username is required for this vulnerability to be exposed. This has been fixed in version 1.5.1.
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:H
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
Matkt Hyperledger Besu 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Matkt Hyperledger Besu是 （Matkt）开源的一个应用程序。用于运行，维护，调试和监视以太坊网络中的节点。 Hyperledger Besu 存在安全漏洞，该漏洞源于单个用户很容易用无效的请求(不正确的密码)重载登录端点。
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
hyperledger besu < 1.5.1 -

II. Public POCs for CVE-2021-21369

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III. Intelligence Information for CVE-2021-21369

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Patches & Fixes for CVE-2021-21369 (2)

Vendor Advisories for CVE-2021-21369 (1)

Other References for CVE-2021-21369 (1)

IV. Related Vulnerabilities

Same product: besu
Same vendor: hyperledger
Same weakness: CWE-400

V. Comments for CVE-2021-21369

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