Vulnerability DatabaseCVE-2021-44964
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CVE-2021-44964
Published:March 14, 2022
Updated:May 17, 2026
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.
Affected Packages
lua (CONAN):
Affected version(s) >=5.4.1 <5.4.4
Fix Suggestion:
Update to version 5.4.4
https://github.com/lua/lua.git (GITHUB):
Affected version(s) >=v5.4.0 <v5.4.4
Fix Suggestion:
Update to version v5.4.4
Related Resources (7)
http://lua-users.org/lists/lua-l/2021-11/msg00186.html
https://access.redhat.com/security/cve/CVE-2021-44964
http://lua-users.org/lists/lua-l/2021-12/msg00030.html
http://lua-users.org/lists/lua-l/2021-12/msg00007.html
https://security-tracker.debian.org/tracker/CVE-2021-44964
https://github.com/Lua-Project/lua-5.4.4-sandbox-escape-with-new-vulnerability
http://lua-users.org/lists/lua-l/2021-12/msg00015.html
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CVSS v4
Base Score:
8.2
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
HIGH
CVSS v3
Base Score:
6.3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Use After Free
CWE-416
EPSS
Base Score:
0.26