Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Lua | Lua | 5.3.5 |
| Canonical | Ubuntu Linux | 16.04 |
Related Weaknesses (CWE)
References
- http://lua-users.org/lists/lua-l/2019-01/msg00039.htmlBroken Link
- http://packetstormsecurity.com/files/151335/Lua-5.3.5-Use-After-Free.htmlExploitThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/cve-2019-6706Third Party Advisory
- https://github.com/Lua-Project/cve-analysis/blob/a43c9ccd00274b31fa2f24c6c8f20ceExploitThird Party Advisory
- https://github.com/lua/lua/commit/89aee84cbc9224f638f3b7951b306d2ee8ecb71ePatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00031.html
- http://lua-users.org/lists/lua-l/2019-01/msg00039.htmlBroken Link
- http://packetstormsecurity.com/files/151335/Lua-5.3.5-Use-After-Free.htmlExploitThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/cve-2019-6706Third Party Advisory
- https://github.com/Lua-Project/cve-analysis/blob/a43c9ccd00274b31fa2f24c6c8f20ceExploitThird Party Advisory
- https://github.com/lua/lua/commit/89aee84cbc9224f638f3b7951b306d2ee8ecb71ePatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00031.html
FAQ
What is CVE-2019-6706?
CVE-2019-6706 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 c...
How severe is CVE-2019-6706?
CVE-2019-6706 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-6706?
Check the references section above for vendor advisories and patch information. Affected products include: Lua Lua, Canonical Ubuntu Linux.