CVE-2021-21369
Published Mar 9, 2021
Last updated 4 years ago
Overview
- 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
- security-advisories@github.com
- NVD status
- Analyzed
Social media
- Hype score
- Not currently trending
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 6.5
- Impact score
- 3.6
- Exploitability score
- 2.8
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 4
- Impact score
- 2.9
- Exploitability score
- 8
- Vector string
- AV:N/AC:L/Au:S/C:N/I:N/A:P
Weaknesses
- security-advisories@github.com
- CWE-400
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:linuxfoundation:besu:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "236DADDD-59BD-4AD7-9B91-16F5A30FFA0D",
"versionEndExcluding": "1.5.1"
}
],
"operator": "OR"
}
]
}
]