CVE-2022-28805 Information

Description

singlevar in lparser.c in Lua through 5.4.4 lacks a certain luaK_exp2anyregup call leading to a heap-based buffer over-read that might affect a system that compiles untrusted Lua code.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Reference

https://lua-users.org/lists/lua-l/2022-02/msg00001.html https://lua-users.org/lists/lua-l/2022-02/msg00070.html https://lua-users.org/lists/lua-l/2022-04/msg00009.html https://github.com/lua/lua/commit/1f3c6f4534c6411313361697d98d1145a1f030fa

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

HIGH

Base Severity

9.1