CVE-2020-15945 Information

Description

Lua through 5.4.0 has a segmentation fault in changedline in ldebug.c (e.g. when called by luaG_traceexec) because it incorrectly expects that an oldpc value is always updated upon a return of the flow of control to a function.

CVSS Vector

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

Reference

http://lua-users.org/lists/lua-l/2020-07/msg00123.html https://github.com/lua/lua/commit/a2195644d89812e5b157ce7bac35543e06db05e3

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5