CVE-2020-15889
CRITICALCVSS 9.8/10EPSS 2.23%
Last modified
CVE-2020-15889 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 2.23% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Lua | Lua | 5.4.0 |
References
- http://lua-users.org/lists/lua-l/2020-07/msg00078.htmlExploit, Mailing List, Third Party Advisory
- http://lua-users.org/lists/lua-l/2020-12/msg00157.htmlMailing List, Third Party Advisory
- https://github.com/lua/lua/commit/127e7a6c8942b362aa3c6627f44d660a4fb75312Patch, Third Party Advisory
- http://lua-users.org/lists/lua-l/2020-07/msg00078.htmlExploit, Mailing List, Third Party Advisory
- http://lua-users.org/lists/lua-l/2020-12/msg00157.htmlMailing List, Third Party Advisory
- https://github.com/lua/lua/commit/127e7a6c8942b362aa3c6627f44d660a4fb75312Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2020-15889?
CVE-2020-15889 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.23% probability of exploitation in the next 30 days.
How do I fix CVE-2020-15889?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2020
- CVE-2020-15883A Cross-Site Scripting (XSS) vulnerability in the managedins…6.1
- CVE-2020-15884A SQL injection vulnerability in TableQuery.php in MunkiRepo…8.8
- CVE-2020-15885A Cross-Site Scripting (XSS) vulnerability in the comment mo…5.4
- CVE-2020-15886A SQL injection vulnerability in reportdata_controller.php i…8.8
- CVE-2020-15887A SQL injection vulnerability in softwareupdate_controller.p…8.8
- CVE-2020-15888Lua through 5.4.0 mishandles the interaction between stack r…8.8
- CVE-2020-1589<p>An information disclosure vulnerability exists when the W…4.4
- CVE-2020-15890LuaJit through 2.1.0-beta3 has an out-of-bounds read because…7.5
- CVE-2020-15892An issue was discovered in apply.cgi on D-Link DAP-1520 devi…9.8
- CVE-2020-15893An issue was discovered on D-Link DIR-816L devices 2.x befor…9.8
- CVE-2020-15894An issue was discovered on D-Link DIR-816L devices 2.x befor…7.5
- CVE-2020-15895An XSS issue was discovered on D-Link DIR-816L devices 2.x b…6.1
Are you affected by CVE-2020-15889?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST