CVE-2021-43519

lua: stack overflow in lua_resume of ldo.c allows a DoS via a crafted script file

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Stack overflow in lua_resume of ldo.c in Lua Interpreter 5.1.0~5.4.4 allows attackers to perform a Denial of Service via a crafted script file.

UN desbordamiento de pila en la función lua_resume del archivo ldo.c en Lua Interpreter versiones 5.1.0~5.4.4, permite a atacantes llevar a cabo una Denegación de Servicio por medio de un archivo de script diseñado

A stack overflow issue was discovered in Lua in the lua_resume() function of 'ldo.c'. This flaw allows a local attacker to pass a specially crafted file to the Lua Interpreter, causing a crash that leads to a denial of service.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-11-08 CVE Reserved
2021-11-09 CVE Published
2024-07-25 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-674: Uncontrolled Recursion
CWE-787: Out-of-bounds Write

CAPEC

References (6)

URL	Tag	Source

URL	Date	SRC
http://lua-users.org/lists/lua-l/2021-10/msg00123.html	2024-08-04

URL	Date	SRC
http://lua-users.org/lists/lua-l/2021-11/msg00015.html	2023-11-07

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C7XHFYHGSZKL53VCLSJSAJ6VMFGAIXKO	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P3EMGAQ5Y6GXJLY4K5DUOOEQT4MZ4J4F	2023-11-07
https://access.redhat.com/security/cve/CVE-2021-43519	2023-03-14
https://bugzilla.redhat.com/show_bug.cgi?id=2047672	2023-03-14

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Lua Search vendor "Lua"		Lua Search vendor "Lua" for product "Lua"				>= 5.1.0 < 5.3.5 Search vendor "Lua" for product "Lua" and version " >= 5.1.0 < 5.3.5"		-		Affected
Lua Search vendor "Lua"		Lua Search vendor "Lua" for product "Lua"				>= 5.4.0 < 5.4.4 Search vendor "Lua" for product "Lua" and version " >= 5.4.0 < 5.4.4"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				35 Search vendor "Fedoraproject" for product "Fedora" and version "35"		-		Affected