[USN-6916-1] Lua vulnerabilities

[Nishit Majithia]

==========================================================================
Ubuntu Security Notice USN-6916-1
July 29, 2024

lua5.4 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in Lua.

Software Description:
- lua5.4: Simple, extensible, embeddable programming language

Details:

It was discovered that Lua did not properly generate code when "_ENV" is
constant. An attacker could possibly use this issue to cause a denial of
service or execute arbitrary unstrusted lua code. (CVE-2022-28805)

It was discovered that Lua did not properly handle C stack overflows during
error handling. An attacker could possibly use this issue to cause a denial
of service. (CVE-2022-33099)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS
  lua5.4                          5.4.4-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-6916-1
  CVE-2022-28805, CVE-2022-33099
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