Heap-based Buffer Over-read in Lua Compiler
CVE-2022-28805

9.1CRITICAL

Key Information:

Vendor

Lua

Status
Lua
Vendor
CVE Published:
8 April 2022

What is CVE-2022-28805?

A vulnerability exists in the Lua compiler versions 5.4.0 to 5.4.4 due to a missing luaK_exp2anyregup call in the lparser.c file. This omission can lead to a heap-based buffer over-read, which may pose significant risks when untrusted Lua code is compiled. Systems utilizing these versions without proper mitigation could be exposed to potentially unsafe data handling, thus emphasizing the importance of upgrading to patched versions and adhering to secure coding practices.

References

https://lua-users.org/lists/lua-l/2022-02/msg00001.html
https://lua-users.org/lists/lua-l/2022-02/msg00070.html
https://lua-users.org/lists/lua-l/2022-04/msg00009.html

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.