Detections
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Linux Distros Unpatched Vulnerability : CVE-2021-43519

medium Nessus Plugin ID 224263

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - Stack overflow in lua_resume of ldo.c in Lua Interpreter 5.1.0~5.4.4 allows attackers to perform a Denial of Service via a crafted script file. (CVE-2021-43519)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://security-tracker.debian.org/tracker/CVE-2021-43519

https://ubuntu.com/security/CVE-2021-43519

Plugin Details

Severity: Medium

ID: 224263

File Name: unpatched_CVE_2021_43519.nasl

Version: 1.4

Type: local

Agent: unix

Family: Misc.

Published: 3/5/2025

Updated: 10/27/2025

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.9

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2021-43519

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5.2

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:U/RC:C

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:fs-uae, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:freedroidrpg, p-cpe:/a:canonical:ubuntu_linux:tup, p-cpe:/a:canonical:ubuntu_linux:rust-lua52-sys, p-cpe:/a:canonical:ubuntu_linux:naev, p-cpe:/a:canonical:ubuntu_linux:emscripten, p-cpe:/a:canonical:ubuntu_linux:golly, p-cpe:/a:canonical:ubuntu_linux:eja, cpe:/o:canonical:ubuntu_linux:25.10, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:bam, p-cpe:/a:debian:debian_linux:lua5.4, p-cpe:/a:canonical:ubuntu_linux:vifm, p-cpe:/a:canonical:ubuntu_linux:goxel, p-cpe:/a:canonical:ubuntu_linux:scorched3d, p-cpe:/a:canonical:ubuntu_linux:tarantool, cpe:/o:canonical:ubuntu_linux:25.04, p-cpe:/a:canonical:ubuntu_linux:wcc, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:scite, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:blobby, p-cpe:/a:canonical:ubuntu_linux:darktable, p-cpe:/a:canonical:ubuntu_linux:widelands

Required KB Items: Host/OS/identifier, Host/cpu, Host/local_checks_enabled, global_settings/vendor_unpatched

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 11/9/2021

Reference Information

CVE: CVE-2021-43519