Bug 2064772 (CVE-2021-44964)

Summary:	CVE-2021-44964 lua: use after free allows Sandbox Escape
Product:	[Other] Security Response	Reporter:	Patrick Del Bello <pdelbell>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	4le, csutherl, drjohnson1, fedora, ffesti, gzaronik, hdegoede, jclere, jwon, lua-packagers-sig, mhroncok, michel, moceap, mschmidt, mturk, packaging-team-maint, pjindal, pmatilai, ravpatil, rob.myers, security-response-team, spotrh, szappis, tcullum, zmiele
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	lua 5.4.4	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the Lua interpreter. This flaw allows an attacker who can have a malicious script executed by the interpreter, to cause a use-after-free issue that may result in a sandbox escape.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-05-09 15:43:57 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2064774, 2064775, 2071781, 2071782, 2072795, 2165887, 2166643
Bug Blocks:	2064778

Description Patrick Del Bello 2022-03-16 14:17:18 UTC

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.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-44964
https://github.com/Lua-Project/lua-5.4.4-sandbox-escape-with-new-vulnerability
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44964
http://lua-users.org/lists/lua-l/2021-12/msg00007.html
http://lua-users.org/lists/lua-l/2021-12/msg00015.html
http://lua-users.org/lists/lua-l/2021-12/msg00030.html
http://lua-users.org/lists/lua-l/2021-11/msg00186.html

Comment 1 Patrick Del Bello 2022-03-16 14:17:40 UTC

Created compat-lua tracking bugs for this issue:

Affects: epel-all [bug 2064775]


Created lua tracking bugs for this issue:

Affects: fedora-all [bug 2064774]

Comment 16 Mauro Matteo Cascella 2023-02-27 13:46:51 UTC

Upstream fix:
https://github.com/lua/lua/commit/0bfc572e51d9035a615ef6e9523f736c9ffa8e57

Comment 18 errata-xmlrpc 2023-02-28 08:19:01 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:0957 https://access.redhat.com/errata/RHSA-2023:0957

Comment 19 errata-xmlrpc 2023-03-14 13:55:04 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Extended Update Support

Via RHSA-2023:1211 https://access.redhat.com/errata/RHSA-2023:1211

Comment 20 Product Security DevOps Team 2023-05-09 15:43:54 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-44964