Out-of-bounds Read in Lua
CVE-2020-15889
Lua 5.4.0 has a getobjname heap-based buffer over-read because youngcollection in lgc.c uses markold for an insufficient number of list members.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.022 (82.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
- Lua — versions 5.4.0
Weakness classification (CWE)
References
- lua-users.org/lists/lua-l/2020-07/msg00078.html (Exploit, Mailing List, Third Party Advisory)
- github.com/lua/lua/commit/127e7a6c8942b362aa3c6627f44d660a4fb75312 (Patch, Third Party Advisory)
- lua-users.org/lists/lua-l/2020-12/msg00157.html (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-15889?
- CVE-2020-15889 is a critical-severity vulnerability in Lua, classified under Out-of-bounds Read. CVSS score: 9.8/10. Published 2020-07-21.
- How severe is CVE-2020-15889?
- Critical severity. CVSS v3 base score is 9.8 out of 10.