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CVE-2021-4217

Published: 24 August 2022

A flaw was found in unzip. The vulnerability occurs due to improper handling of Unicode strings, which can lead to a null pointer dereference. This flaw allows an attacker to input a specially crafted zip file, leading to a crash or code execution.

Priority

Low

Cvss 3 Severity Score

3.3

Score breakdown

Status

Package Release Status
unzip
Launchpad, Ubuntu, Debian
bionic
Released (6.0-21ubuntu1.2)
focal
Released (6.0-25ubuntu1.1)
impish Ignored
(end of life)
trusty
Released (6.0-9ubuntu1.6+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream Needs triage

xenial
Released (6.0-20ubuntu1.1+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
kinetic Ignored
(end of life, was needed)
jammy
Released (6.0-26ubuntu3.1)
mantic Needed

lunar Ignored
(end of life, was needed)

Severity score breakdown

Parameter Value
Base score 3.3
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact Low
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L