CVE-2021-44964

Published: Mar 14, 2022Modified: Nov 21, 2024

6.3

Vector

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

Exploitability: 1.8 / Impact: 4.0

Source: NVD

Description

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 (1)

Products: Lua: Lua

Lua

1 product

Lua

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Lua Lua	From 5.4.0 to 5.4.3

Related CWEs

CWE-416

Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (10)

http://lua-users.org/lists/lua-l/2021-11/msg00186.html

Source: cve@mitre.org

ExploitMailing ListTechnical DescriptionVendor Advisory

http://lua-users.org/lists/lua-l/2021-12/msg00007.html

Source: cve@mitre.org

ExploitMailing ListVendor Advisory

http://lua-users.org/lists/lua-l/2021-12/msg00015.html

Source: cve@mitre.org

Mailing ListVendor Advisory

http://lua-users.org/lists/lua-l/2021-12/msg00030.html

Source: cve@mitre.org

Mailing ListVendor Advisory

https://github.com/Lua-Project/lua-5.4.4-sandbox-escape-with-new-vulnerability

Source: cve@mitre.org

ExploitThird Party Advisory

http://lua-users.org/lists/lua-l/2021-11/msg00186.html