Integer overflow in Lua
CVE-2020-24370
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).
EPSS: 0.038 (89.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Lua — versions 5.2.0, 5.2.1, 5.2.2
- Debian Debian_linux — versions 9.0
- Fedoraproject Fedora — versions 31, 32
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Exploit, Mailing List, Vendor Advisory)
- cve@mitre.org (Patch, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory)
- cve@mitre.org (mailing-list, Mailing List, Third Party Advisory)
- cve@mitre.org (mailing-list, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-24370?
- CVE-2020-24370 is a medium-severity vulnerability in Lua, classified under Integer Underflow. CVSS score: 5.3/10. Published 2020-08-17.
- How severe is CVE-2020-24370?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2020-24370 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.