// For flags

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

3
*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.

*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
  • 2023-08-25 EPSS Updated
  • 2024-08-04 CVE Updated
  • 2024-08-04 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-416: Use After Free
CAPEC
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