Segmentation Fault Vulnerability in Lua by Lua.org
CVE-2020-15945

5.5MEDIUM

Key Information:

Vendor

Lua

Status
Lua
Vendor
CVE Published:
24 July 2020

What is CVE-2020-15945?

The Lua programming language, up to version 5.4.0, contains a segmentation fault vulnerability that occurs in the 'changedline' function located within 'ldebug.c'. During the execution of a function, the flow control does not properly update the 'oldpc' value, which can lead to unpredictable behavior or crashes. This vulnerability highlights the importance of correct state handling in control flow mechanics within programming languages, particularly for execution tracing mechanisms.

References

http://lua-users.org/lists/lua-l/2020-07/msg00123.html
https://github.com/lua/lua/commit/a2195644d89812e5b157ce7...
https://www.lua.org/bugs.html#5.4.0-8

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.