Vulnerability CVE-2020-24342
Published: 2020-08-13

Description:
Lua through 5.4.0 allows a stack redzone cross in luaO_pushvfstring because a protection mechanism wrongly calls luaD_callnoyield twice in a row.

Type:

CWE-119

 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
LUA -> LUA 

 References:
http://lua-users.org/lists/lua-l/2020-07/msg00052.html
https://github.com/lua/lua/commit/34affe7a63fc5d842580a9f23616d057e17dfe27
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