#VU48559 Buffer overflow in Lua - CVE-2020-24342
Published: August 13, 2020 / Updated: November 19, 2020
Vulnerability identifier: #VU48559
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2020-24342
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Lua
Lua
Software vendor:
Lua
Lua
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a stack redzone cross in luaO_pushvfstring because a protection mechanism wrongly calls luaD_callnoyield twice in a row. A remote attacker can pass specially crafted data to the application, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install updates from vendor's website.