Critical severity · published Apr 8, 2022
CVE-2022-28805
singlevar in lparser.c in Lua from (including) 5.4.0 up to (excluding) 5.4.4 lacks a certain luaK_exp2anyregup call, leading to a heap-based buffer over-read that might affect a…
9.1
CVSS
3%
EPSS
No
On KEV
Description
singlevar in lparser.c in Lua from (including) 5.4.0 up to (excluding) 5.4.4 lacks a certain luaK_exp2anyregup call, leading to a heap-based buffer over-read that might affect a system that compiles untrusted Lua code.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.0% · higher than 87% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
35; 36 · source: NVD
LU
Lua · Lua
5.4.0 before 5.4.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-28805
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-28805
Patch
https://github.com/lua/lua/commit/1f3c6f4534c6411313361697d98d1145a1f030fa
Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RJNJ66IFDUKWJJZXHGOLRGIA3HWWC36R/
Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHYZOEFDVLVAD6EEP4CDW6DNONIVVHPA/
Exploit
https://lua-users.org/lists/lua-l/2022-02/msg00001.html
Exploit
https://lua-users.org/lists/lua-l/2022-02/msg00070.html
Exploit
https://lua-users.org/lists/lua-l/2022-04/msg00009.html
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