CVE-2021-44647
MEDIUMCVSS 5.5/10EPSS 0.42%
Last modified
CVE-2021-44647 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Lua v5.4.3 and above are affected by SEGV by type confusion in funcnamefromcode function in ldebug.c which can cause a local denial of service.. EPSS estimates a 0.42% chance of exploitation in the next 30 days.
Description
Lua v5.4.3 and above are affected by SEGV by type confusion in funcnamefromcode function in ldebug.c which can cause a local denial of service.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Lua | Lua | 5.4.3 |
| Fedoraproject | Fedora | 34 |
References
- http://lua-users.org/lists/lua-l/2021-11/msg00195.htmlExploit, Mailing List, Vendor Advisory
- http://lua-users.org/lists/lua-l/2021-11/msg00204.htmlMailing List, Patch, Vendor Advisory
- https://access.redhat.com/security/cve/cve-2021-44647Third Party Advisory
- http://lua-users.org/lists/lua-l/2021-11/msg00195.htmlExploit, Mailing List, Vendor Advisory
- http://lua-users.org/lists/lua-l/2021-11/msg00204.htmlMailing List, Patch, Vendor Advisory
- https://access.redhat.com/security/cve/cve-2021-44647Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-44647?
Lua v5.4.3 and above are affected by SEGV by type confusion in funcnamefromcode function in ldebug.c which can cause a local denial of service.
How severe is CVE-2021-44647?
CVE-2021-44647 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.42% probability of exploitation in the next 30 days.
How do I fix CVE-2021-44647?
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.
Are you affected by CVE-2021-44647?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST