Vulnerability 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.
CVSS Score
6.3
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Lua | Lua | >= 5.4.0, <= 5.4.3 |
Related Weaknesses (CWE)
References
- http://lua-users.org/lists/lua-l/2021-11/msg00186.htmlExploitMailing ListTechnical Description
- http://lua-users.org/lists/lua-l/2021-12/msg00007.htmlExploitMailing ListVendor Advisory
- http://lua-users.org/lists/lua-l/2021-12/msg00015.htmlMailing ListVendor Advisory
- http://lua-users.org/lists/lua-l/2021-12/msg00030.htmlMailing ListVendor Advisory
- https://github.com/Lua-Project/lua-5.4.4-sandbox-escape-with-new-vulnerabilityExploitThird Party Advisory
- http://lua-users.org/lists/lua-l/2021-11/msg00186.htmlExploitMailing ListTechnical Description
- http://lua-users.org/lists/lua-l/2021-12/msg00007.htmlExploitMailing ListVendor Advisory
- http://lua-users.org/lists/lua-l/2021-12/msg00015.htmlMailing ListVendor Advisory
- http://lua-users.org/lists/lua-l/2021-12/msg00030.htmlMailing ListVendor Advisory
- https://github.com/Lua-Project/lua-5.4.4-sandbox-escape-with-new-vulnerabilityExploitThird Party Advisory
FAQ
What is CVE-2021-44964?
CVE-2021-44964 is a vulnerability with a CVSS score of 6.3 (MEDIUM). 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.
How severe is CVE-2021-44964?
CVE-2021-44964 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-44964?
Check the references section above for vendor advisories and patch information. Affected products include: Lua Lua.