Vulnerability · Published Mar 14, 2022 · Assigned by mitre
CVE-2021-44964
Medium 6.3
In plain English
A medium-severity security flaw in the lua package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 63% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.3Medium
Exploit odds (30 days)1.0%top 37.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Use after free in garbage collector and finalizer of lgc.c in Lua interpreter 5.4.0~5.4.3 allows attackers to perform Sandbox Escape via a crafted script file.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:9 | lua | 5.4.4-2.el9_1 | ALSA-2023:0957 |
| AlmaLinux:9 | lua-devel | 5.4.4-2.el9_1 | ALSA-2023:0957 |
| AlmaLinux:9 | lua-libs | 5.4.4-2.el9_1 | ALSA-2023:0957 |
| Debian:12 | lua5.4 | 5.4.4-1 | DEBIAN-CVE-2021-44964 |
| Debian:13 | lua5.4 | 5.4.4-1 | DEBIAN-CVE-2021-44964 |
| Debian:14 | lua5.4 | 5.4.4-1 | DEBIAN-CVE-2021-44964 |
| Rocky Linux:9 | lua | 0:5.4.4-2.el9_1 | RLSA-2023:0957 |
Affected products (as reported)
References
- http://lua-users.org/lists/lua-l/2021-11/msg00186.html x_refsource_MISC
- http://lua-users.org/lists/lua-l/2021-12/msg00007.html x_refsource_MISC
- http://lua-users.org/lists/lua-l/2021-12/msg00015.html x_refsource_MISC
- http://lua-users.org/lists/lua-l/2021-12/msg00030.html x_refsource_MISC
- https://github.com/Lua-Project/lua-5.4.4-sandbox-escape-with-new-vulnerability x_refsource_MISC