CVE-2021-44964

lua: use after free allows Sandbox Escape

Severity Score

6.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Use after free in garbage collector and finalizer of lgc.c in Lua interpreter 5.4.0~5.4.3 allows attackers to perform Sandbox Escape via a crafted script file.

Un uso de memoria previamente liberada en el recolector de basura y en el finalizador de lgc.c en el intérprete de Lua versiones 5.4.0~5.4.3, permite a atacantes llevar a cabo un Escape del Sandbox por medio de un archivo de script diseñado

A flaw was found in the Lua interpreter. This flaw allows an attacker who can have a malicious script executed by the interpreter, to cause a use-after-free issue that may result in a sandbox escape.

Red Hat OpenShift Data Foundation is software-defined storage integrated with and optimized for the Red Hat OpenShift Container Platform. Red Hat OpenShift Data Foundation is a highly scalable, production-grade persistent storage for stateful applications running in the Red Hat OpenShift Container Platform. Issues addressed include bypass, denial of service, and remote SQL injection vulnerabilities.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

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

2021-12-13 CVE Reserved
2022-03-14 CVE Published
2024-08-04 CVE Updated
2024-08-04 First Exploit
2025-04-01 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-416: Use After Free

CAPEC

References (7)

URL	Tag	Source

URL	Date	SRC
http://lua-users.org/lists/lua-l/2021-11/msg00186.html	2024-08-04
http://lua-users.org/lists/lua-l/2021-12/msg00007.html	2024-08-04
https://github.com/Lua-Project/lua-5.4.4-sandbox-escape-with-new-vulnerability	2024-08-04

URL	Date	SRC

URL	Date	SRC
http://lua-users.org/lists/lua-l/2021-12/msg00015.html	2022-03-21
http://lua-users.org/lists/lua-l/2021-12/msg00030.html	2022-03-21
https://access.redhat.com/security/cve/CVE-2021-44964	2023-03-14
https://bugzilla.redhat.com/show_bug.cgi?id=2064772	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"				>= 5.4.0 <= 5.4.3 Search vendor "Lua" for product "Lua" and version " >= 5.4.0 <= 5.4.3"		-		Affected