MEDIUM
CVE-2020-24370
CWE-191Published: August 17, 2020· Updated: Jun 17, 2026
5.3
CVSS v3.1
Official Description
ldebug.c in Lua 5.4.0 allows a negation overflow and segmentation fault in getlocal and setlocal, as demonstrated by getlocal(3,2^31).
Technical Analysis
CVE-2020-24370 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected Vendors & Products
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (12)
→
http://lua-users.org/lists/lua-l/2020-07/msg00324.htmlExploit · Mailing List · Vendor Advisory
→
https://github.com/lua/lua/commit/a585eae6e7ada1ca9271607a4f48dfb17868ab7bPatch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/09/msg00019.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2023/06/msg00031.htmlThird Party Advisory
→
→
→
http://lua-users.org/lists/lua-l/2020-07/msg00324.htmlExploit · Mailing List · Vendor Advisory
→
https://github.com/lua/lua/commit/a585eae6e7ada1ca9271607a4f48dfb17868ab7bPatch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/09/msg00019.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2023/06/msg00031.htmlThird Party Advisory
→
Quick Facts
CVE IDCVE-2020-24370
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-191
CISA KEVNo
Affected3 vendor(s)
PublishedAug 17, 2020
Related CVEs (CWE-191)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-24370 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.