CVE-2023-30087

Publication date 9 May 2023

Last updated 11 July 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Buffer Overflow vulnerability found in Cesanta MJS v.1.26 allows a local attacker to cause a denial of service via the mjs_mk_string function in mjs.c.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
openvlbi	26.04 LTS resolute	Needs evaluation
	25.10 questing	Needs evaluation
	25.04 plucky	Ignored end of life, was needs-triage
	24.10 oracular	Ignored end of life, was needs-triage
	24.04 LTS noble	Needs evaluation
	23.10 mantic	Ignored end of life, was needs-triage
	23.04 lunar	Ignored end of life, was needs-triage
	22.10 kinetic	Ignored end of life, was needs-triage
	22.04 LTS jammy	Needs evaluation
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Ignored end of standard support
	14.04 LTS trusty	Ignored end of standard support

Notes

ccdm94

openvlbi seems to contain a partial copy of the cesanta/mjs code and it includes the mentioned vulnerable function (mjs_mk_string).

Severity score breakdown

Parameter	Value
Base score	5.5 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H