SB20220201102 - Fedora 34 update for lua

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Main Vulnerability Database SB20220201102

SB20220201102 - Fedora 34 update for lua

Published: February 1, 2022

Security Bulletin ID SB20220201102
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) Type Confusion (CVE-ID: CVE-2021-44647)

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

The vulnerability exists due to a type confusion error within the funcnamefromcode() function in ldebug.c. A remote attacker can pass specially crafted data to the application, trigger a type confusion error and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References