CVE-2019-6706

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 v3.1 NVD

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0 NVD

5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS

17.36% chance of exploitation in the next 30 days, 97th percentile

Published

2019-01-23

Updated

2024-08-04

Proof-of-concept exploits (1)

• http://packetstormsecurity.com/files/151335/Lua-5.3.5-Use-After-Free.html

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/46246

Security advisories

• https://access.redhat.com/security/cve/cve-2019-6706
• Lua-Project/cve-analysis/blob/a43c9ccd00274b31fa2f24c6c8f20ce36655682d/CVE-2019-6706.pdf
• lua/lua/commit/89aee84cbc9224f638f3b7951b306d2ee8ecb71e

References

• CVE Record
• NVD entry