High severity · published Aug 13, 2020
CVE-2020-24342
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
7.8
CVSS
1.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
33 · source: NVD
LU
Lua · Lua
5.4.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-24342
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-24342
Exploit
http://lua-users.org/lists/lua-l/2020-07/msg00052.html
Patch
https://github.com/lua/lua/commit/34affe7a63fc5d842580a9f23616d057e17dfe27
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QA5Q5MDQMTGXRQO3PAQ4EZFTYWJXZM5N/
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