CVE-2019-6706

28Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendepss 17%

from disclosure to weapon2 days

Published on NVDJan 23

1st PoC+2d

exploitation probability

17%top 3% of all CVEs

observed exploitation

nono source reports it

2 public exploit(s)

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.

Affected products

n/a · n/a

public PoCs found — 2

cve_referencepacketstormsecurity.com/files/151335/Lua-5.3.5-Use-After-Free.htmlunverified exploitdbwww.exploit-db.com/exploits/46246unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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/lua/commit/89aee84cbc9224f638f3b7951b306d2ee8ecb71e https://github.com/Lua-Project/cve-analysis/blob/a43c9ccd00274b31fa2f24c6c8f20ce36655682d/CVE-2019-6706.pdf https://lists.debian.org/debian-lts-announce/2023/06/msg00031.html