CVE-2021-31684

Publication date 1 June 2021

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A vulnerability was discovered in the indexOf function of JSONParserByteArray in JSON Smart versions 1.3 and 2.4 which causes a denial of service (DOS) via a crafted web request.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
json-smart	23.04 lunar	Fixed 2.2-2ubuntu1
	22.10 kinetic	Fixed 2.2-2ubuntu0.22.10.1
	22.04 LTS jammy	Fixed 2.2-2ubuntu0.22.04.1
	21.10 impish	Ignored end of life
	21.04 hirsute	Ignored end of life
	20.10 groovy	Ignored end of life
	20.04 LTS focal	Fixed 2.2-2ubuntu0.20.04.1
	18.04 LTS bionic	Fixed 2.2-2ubuntu0.18.04.1
	16.04 LTS xenial	Ignored end of standard support
	14.04 LTS trusty	Not in release

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-6011-1
Json-smart vulnerabilities
12 April 2023