#VU62053 Heap-based buffer overflow


Published: 2022-04-11

Vulnerability identifier: #VU62053

Vulnerability risk: High

CVSSv3.1: 9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2022-28805

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Lua
Universal components / Libraries / Scripting languages

Vendor: Lua

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the singlevar function in lparser.c. A remote attacker can use a specially crafted luaK_exp2anyregup call, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Lua: 5.4.0 - 5.4.4


CPE

External links
http://lua-users.org/lists/lua-l/2022-02/msg00001.html
http://lua-users.org/lists/lua-l/2022-02/msg00070.html
http://lua-users.org/lists/lua-l/2022-04/msg00009.html
http://github.com/lua/lua/commit/1f3c6f4534c6411313361697d98d1145a1f030fa


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.


Latest bulletins with this vulnerability