7.5

CVE-2019-6706

Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Lua ≫ Lua Version5.3.5
Canonical ≫ Ubuntu Linux Version16.04 SwEditionlts
Canonical ≫ Ubuntu Linux Version18.04 SwEditionlts
Canonical ≫ Ubuntu Linux Version18.10
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 17.22% 0.967
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd@nist.gov 5 10 2.9
AV:N/AC:L/Au:N/C:N/I:N/A:P
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

http://lua-users.org/lists/lua-l/2019-01/msg00039.html
Broken Link
http://packetstormsecurity.com/files/151335/Lua-5.3.5-Use-After-Free.html
Third Party Advisory
Exploit
VDB Entry
https://access.redhat.com/security/cve/cve-2019-6706
Third Party Advisory
https://github.com/Lua-Project/cve-analysis/blob/a43c9ccd00274b31fa2f24c6c8f20ce36655682d/CVE-2019-6706.pdf
Third Party Advisory
Exploit
https://github.com/lua/lua/commit/89aee84cbc9224f638f3b7951b306d2ee8ecb71e
Patch
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/06/msg00031.html