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.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2021-03-09T18:10:18

Updated: 2024-08-03T18:09:15.981Z

Reserved: 2020-12-22T00:00:00

Link: CVE-2021-21369

cve-icon Vulnrichment

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cve-icon NVD

Status : Analyzed

Published: 2021-03-09T18:15:18.047

Modified: 2021-03-16T17:25:35.820

Link: CVE-2021-21369

cve-icon Redhat

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