CVE-2022-28805

lua: heap buffer overread

Severity Score

9.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

singlevar in lparser.c in Lua from (including) 5.4.0 up to (excluding) 5.4.4 lacks a certain luaK_exp2anyregup call, leading to a heap-based buffer over-read that might affect a system that compiles untrusted Lua code.

singlevar en lparser.c en Lua desde (incluyendo) 5.4.0 hasta (excluyendo) 5.4.4 carece de una determinada llamada a luaK_exp2anyregup, lo que lleva a una sobrelectura del búfer basada en la pila que podría afectar a un sistema que compila código Lua no fiable

A heap buffer-overflow vulnerability was found in Lua. The flaw occurs due to vulnerable code present in the lparser.c function of Lua that allows the execution of untrusted Lua code into a system, resulting in malicious activity.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-04-08 CVE Reserved
2022-04-08 CVE Published
2024-08-03 CVE Updated
2024-08-03 First Exploit
2024-11-12 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-125: Out-of-bounds Read

CAPEC

References (9)

URL	Tag	Source

URL	Date	SRC
https://lua-users.org/lists/lua-l/2022-02/msg00001.html	2024-08-03
https://lua-users.org/lists/lua-l/2022-02/msg00070.html	2024-08-03
https://lua-users.org/lists/lua-l/2022-04/msg00009.html	2024-08-03

URL	Date	SRC
https://github.com/lua/lua/commit/1f3c6f4534c6411313361697d98d1145a1f030fa	2024-06-20

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RJNJ66IFDUKWJJZXHGOLRGIA3HWWC36R	2024-06-20
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHYZOEFDVLVAD6EEP4CDW6DNONIVVHPA	2024-06-20
https://security.gentoo.org/glsa/202305-23	2024-06-20
https://access.redhat.com/security/cve/CVE-2022-28805	2023-05-09
https://bugzilla.redhat.com/show_bug.cgi?id=2073884	2023-05-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Lua Search vendor "Lua"		Lua Search vendor "Lua" for product "Lua"				>= 5.4.0 < 5.4.5 Search vendor "Lua" for product "Lua" and version " >= 5.4.0 < 5.4.5"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				35 Search vendor "Fedoraproject" for product "Fedora" and version "35"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				36 Search vendor "Fedoraproject" for product "Fedora" and version "36"		-		Affected