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CVE-2021-45985

Good to know:

Date: April 10, 2023

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

Language: C

Severity Score

7.5

Related Resources (6)

Url: https://github.com/lua/lua/commit/cf613cdc6fa367257fc61c256f63d917350858b5

Url: http://lua-users.org/lists/lua-l/2021-12/msg00019.html

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-45985

Url: https://security-tracker.debian.org/tracker/CVE-2021-45985

Url: https://www.lua.org/bugs.html#5.4.3-11

Url: https://www.mend.io/vulnerability-database/CVE-2021-45985

Severity Score

7.5

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

Top Fix

Upgrade Version

Upgrade to version v5.4.4

CVSS v3.1

Base Score:	7.5
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

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