CVE-2019-6706

Published: Jan 23, 2019Modified: Nov 21, 2024

7.5

Vector

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

Exploitability: 3.9 / Impact: 3.6

Source: NVD

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.

Affected (4)

Products: Lua: Lua · Canonical: Ubuntu Linux

1 product

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Lua Lua	Version 5.3.5

Configuration B

3 vulnerable

Vulnerable Software	Affected Versions
Canonical Ubuntu Linux	Version 16.04
Canonical Ubuntu Linux	Version 18.04
Canonical Ubuntu Linux	Version 18.10

Related CWEs

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (12)

http://lua-users.org/lists/lua-l/2019-01/msg00039.html

Source: cve@mitre.org

Broken Link

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

Source: cve@mitre.org

ExploitThird Party AdvisoryVDB Entry

https://access.redhat.com/security/cve/cve-2019-6706

Source: cve@mitre.org

Third Party Advisory

https://github.com/Lua-Project/cve-analysis/blob/a43c9ccd00274b31fa2f24c6c8f20ce36655682d/CVE-2019-6706.pdf

Source: cve@mitre.org

ExploitThird Party Advisory

https://github.com/lua/lua/commit/89aee84cbc9224f638f3b7951b306d2ee8ecb71e

Source: cve@mitre.org

PatchThird Party Advisory

https://lists.debian.org/debian-lts-announce/2023/06/msg00031.html

Source: cve@mitre.org

http://lua-users.org/lists/lua-l/2019-01/msg00039.html