Home/CVE/Use after free in garbage collector and finalizer of lgc.c in Lua interpreter 5.4.0~5.4.3 allows attackers to perform Sa
CVE

CVE-2021-44964

Use after free in garbage collector and finalizer of lgc.c in Lua interpreter 5.4.0~5.4.3 allows attackers to perform Sa

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.

MEDIUM · CVSS 6.3 EPSS 0.00152
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-416Use After Free
▤

Affected Products & Versions

1
lua>= 5.4.0 and <= 5.4.3
⚠

Public Exploits & PoCs

3
poclua-users.org · msg00186.htmllua-users.org
poclua-users.org · msg00007.htmllua-users.org
pocgithub.com · lua-5.4.4-sandbox-escape-with-new-vulnerabilitygithub.com
▣

Scoring & Timeline

6.3
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD14 Mar 2022 · 03:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H
⚑

Vendor Advisories

3
msrcCVE-2021-44964
rhsaRHSA-2023:1211Important
rhsaRHSA-2023:0957Important
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
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
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