Heap Overflow Vulnerability in Lua 5.4.3 Affects Multiple Applications
CVE-2021-45985

7.5HIGH

Key Information:

Vendor

Lua

Status
Lua
Vendor
CVE Published:
10 April 2023

What is CVE-2021-45985?

In Lua version 5.4.3, a flaw exists due to an incorrect finalizer being invoked during a tail call, which can lead to a heap-based buffer over-read. This vulnerability may allow an attacker to exploit memory operations, potentially leading to exposure of sensitive data or unauthorized access to application functions. Users and developers utilizing Lua 5.4.3 should consider updating their systems and implementing security measures to mitigate any risk associated with this issue.

References

https://www.lua.org/bugs.html#5.4.3-11
https://github.com/lua/lua/commit/cf613cdc6fa367257fc61c2...
http://lua-users.org/lists/lua-l/2021-12/msg00019.html

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.