#VU17229 Heap use-after-free in Lua - CVE-2019-6706
Published: January 27, 2019 / Updated: June 17, 2021
Vulnerability identifier: #VU17229
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear
CVE-ID: CVE-2019-6706
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
Lua
Lua
Software vendor:
Lua
Lua
Description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a geap use-after-free error in lua_upvaluejoin in lapi.c. A remote attacker who is able to trigger a debug.upvaluejoin call in which the arguments have certain relationships can cause the service to crash.
Remediation
Install updates from vendor's website.