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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-21328 Detail

Description

Vapor is a web framework for Swift. In Vapor before version 4.40.1, there is a DoS attack against anyone who Bootstraps a metrics backend for their Vapor app. The following is the attack vector: 1. send unlimited requests against a vapor instance with different paths. this will create unlimited counters and timers, which will eventually drain the system. 2. downstream services might suffer from this attack as well by being spammed with error paths. This has been patched in 4.40.1. The `DefaultResponder` will rewrite any undefined route paths for to `vapor_route_undefined` to avoid unlimited counters.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/vapor/vapor/commit/e3aa712508db2854ac0ab905696c65fd88fa7e23 Patch  Third Party Advisory 
https://github.com/vapor/vapor/commit/e3aa712508db2854ac0ab905696c65fd88fa7e23 Patch  Third Party Advisory 
https://github.com/vapor/vapor/releases/tag/4.40.1 Release Notes  Third Party Advisory 
https://github.com/vapor/vapor/releases/tag/4.40.1 Release Notes  Third Party Advisory 
https://github.com/vapor/vapor/security/advisories/GHSA-gcj9-jj38-hwmc Third Party Advisory 
https://github.com/vapor/vapor/security/advisories/GHSA-gcj9-jj38-hwmc Third Party Advisory 
https://vapor.codes/ Product 
https://vapor.codes/ Product 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-400 Uncontrolled Resource Consumption GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-21328
NVD Published Date:
02/25/2021
NVD Last Modified:
11/21/2024
Source:
GitHub, Inc.