CVE-2019-6706
Published: August 31, 2023Last modified: August 31, 2023
Description
Lua 5.3.5 has a use-after-free in lua_upvaluejoin in lapi.c. For example, a crash outcome might be achieved by an attacker who is able to trigger a debug.upvaluejoin call in which the arguments have certain relationships.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | lua5.3 | Not affected (5.3.6-r4) |
| lua5.4 | Not affected (5.4.6-r0) | ||
| Stream | lua5.3 | Not affected (5.3.6-r6) | |
| lua5.4 | Not affected (5.4.6-r1) |
References
- http://lua-users.org/lists/lua-l/2019-01/msg00039.html
- http://packetstormsecurity.com/files/151335/Lua-5.3.5-Use-After-Free.html
- https://access.redhat.com/security/cve/cve-2019-6706
- https://github.com/Lua-Project/cve-analysis/blob/a43c9ccd00274b31fa2f24c6c8f20ce36655682d/CVE-2019-6706.pdf
- https://github.com/lua/lua/commit/89aee84cbc9224f638f3b7951b306d2ee8ecb71e
- https://lists.debian.org/debian-lts-announce/2023/06/msg00031.html