CVE-2021-45985

Severity CVSS v4.0:

Pending analysis

Type:

CWE-787 Out-of-bounds Write

Publication date:

10/04/2023

Last modified:

25/04/2025

Description

In Lua 5.4.3, an erroneous finalizer called during a tail call leads to a heap-based buffer over-read.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

7.50

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:lua:lua::::::::	5.4.0 (including)	5.4.4 (excluding)

To consult the complete list of CPE names with products and versions, see this page

References to Advisories, Solutions, and Tools

http://lua-users.org/lists/lua-l/2021-12/msg00019.html
https://github.com/lua/lua/commit/cf613cdc6fa367257fc61c256f63d917350858b5
https://www.lua.org/bugs.html#5.4.3-11
http://lua-users.org/lists/lua-l/2021-12/msg00019.html
https://github.com/lua/lua/commit/cf613cdc6fa367257fc61c256f63d917350858b5
https://www.lua.org/bugs.html#5.4.3-11