SB2023031437 - Red Hat Enterprise Linux 9.0 Extended Update Support update for lua

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2023031437

SB2023031437 - Red Hat Enterprise Linux 9.0 Extended Update Support update for lua

Published: March 14, 2023

Security Bulletin ID SB2023031437
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Stack-based buffer overflow (CVE-ID: CVE-2021-43519)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the lua_resume() function of ldo.c. A remote attacker can pass a specially crafted script file to he application, trigger a stack-based buffer overflow and perform a denial of service (DoS) attack.


2) Use-after-free (CVE-ID: CVE-2021-44964)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error in garbage collector and finalizer of lgc.c. A remote attacker can pass specially crafted script file to the application, trigger a use-after-free error and perform a denial of service (DoS) attack.



Remediation

Install update from vendor's website.

References