CVE-2021-43519: Medium severity lua lpeg vulnerability
Stack overflow in luaresume of ldo.c in Lua Interpreter 5.1.0~5.4.4 allows attackers to perform a Denial of Service via a crafted script file.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is CVE-2021-43519?
CVE-2021-43519 is a vulnerability in the Lua Interpreter that allows attackers to perform a Denial of Service through a crafted script file.
What software is affected by CVE-2021-43519?
The Lua Interpreter versions 5.1.0 to 5.3.5, and 5.4.0 to 5.4.4, as well as Fedora 35, are affected by CVE-2021-43519.
What is the severity of CVE-2021-43519?
CVE-2021-43519 has a severity level of 5.5, which is classified as medium.
How can attackers exploit CVE-2021-43519?
Attackers can exploit CVE-2021-43519 by utilizing a crafted script file to cause a stack overflow in the lua_resume function, leading to a Denial of Service.
Are there any references for CVE-2021-43519?
Yes, you can find more information about CVE-2021-43519 at the following references: http://lua-users.org/lists/lua-l/2021-10/msg00123.html, http://lua-users.org/lists/lua-l/2021-11/msg00015.html, https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/C7XHFYHGSZKL53VCLSJSAJ6VMFGAIXKO/