Out-of-bounds read in Lua - CVE-2020-15889
Published: July 22, 2020 / Updated: October 18, 2020
Vulnerability identifier: #VU47701
CSH Severity: Medium
CVSS v4: 5.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-15889
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to getobjname heap-based buffer over-read within the youngcollection() function in lgc.c that uses markold for an insufficient number of list members. A remote attacker can perform a denial of service attack.
Affected software
Lua
Arch Linux
Arch Linux
How to mitigate CVE-2020-15889
Install update from vendor's website.
Lua - update to 5.4.1