CVE-2020-24342
HIGH EPSS 61.1%
Published Aug 13, 20205y ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
Published Aug 13, 2020 5y ago
Last Modified Jun 17, 2026 2w ago
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 Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High
Threat Intelligence
EPSS Exploit Probability
61.1% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available
Weaknesses 1
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Memory Safety
Affected Products 2
| Vendor | Product | Version | Range |
|---|---|---|---|
| lua | lua | 5.4.0 | any |
| fedoraproject | fedora | 33 | any |
References 3
- lua-users.org http://lua-users.org/lists/lua-l/2020-07/msg00052.html
- github.com https://github.com/lua/lua/commit/34affe7a63fc5d842580a9f23616d057e17dfe27
- lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QA5Q5MDQMTGXRQO3PAQ4EZFTYWJXZM5N/
Remediation
- github.com https://github.com/lua/lua/commit/34affe7a63fc5d842580a9f23616d057e17dfe27