CVE-2021-45985

Public Exploit

Description

In Lua 5.4.3, an erroneous finalizer called during a tail call leads to a heap-based buffer over-read.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.32%
Vendor Advisory lua-users.org Vendor Advisory lua.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.lua.org/bugs.html#5.4.3-11 vendor advisory
https://github.com/lua/lua/commit/cf613cdc6fa367257fc61c256f63d917350858b5 patch
http://lua-users.org/lists/lua-l/2021-12/msg00019.html vendor advisory mailing list exploit

Frequently Asked Questions

What is the severity of CVE-2021-45985?
CVE-2021-45985 has been scored as a high severity vulnerability.
How to fix CVE-2021-45985?
To fix CVE-2021-45985, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-45985 being actively exploited in the wild?
It is possible that CVE-2021-45985 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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