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CVE-2021-44647

Good to know:

Date: January 10, 2022

Lua v5.4.3 and above are affected by SEGV by type confusion in funcnamefromcode function in ldebug.c which can cause a local denial of service.

Language: C

Severity Score

5.5

Related Resources (10)

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-44647

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P3EMGAQ5Y6GXJLY4K5DUOOEQT4MZ4J4F/

Url: https://security-tracker.debian.org/tracker/CVE-2021-44647

Url: http://lua-users.org/lists/lua-l/2021-11/msg00204.html

Url: http://lua-users.org/lists/lua-l/2021-11/msg00195.html

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P3EMGAQ5Y6GXJLY4K5DUOOEQT4MZ4J4F/

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2021-44647

Url: https://security.gentoo.org/glsa/202305-23

Url: https://access.redhat.com/security/cve/cve-2021-44647

Url: https://www.mend.io/vulnerability-database/CVE-2021-44647

Severity Score

5.5

Weakness Type (CWE)

Access of Resource Using Incompatible Type ('Type Confusion')

CWE-843

Top Fix

Upgrade Version

Upgrade to version lua - 5.4.4

CVSS v3.1

Base Score:	5.5
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	LOW
Privileges Required (PR):	LOW
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	HIGH

CVSS v2

Base Score:	2.1
Access Vector (AV):	LOCAL
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	PARTIAL
Additional information:

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