CVE-2021-4217

2022-08-2400:00:00

ubuntu.com

unzip

flaw

code execution

vulnerability

unicode strings

zip file

3.3 Low

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

0.001 Low

EPSS

Percentile

35.7%

JSON

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.

Bugs

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchunzip< 6.0-21ubuntu1.2UNKNOWN
ubuntu20.04noarchunzip< 6.0-25ubuntu1.1UNKNOWN
ubuntu22.04noarchunzip< 6.0-26ubuntu3.1UNKNOWN
ubuntu23.10noarchunzip< anyUNKNOWN
ubuntu24.04noarchunzip< anyUNKNOWN
ubuntu14.04noarchunzip< 6.0-9ubuntu1.6+esm1UNKNOWN
ubuntu16.04noarchunzip< 6.0-20ubuntu1.1+esm1UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	unzip	< 6.0-21ubuntu1.2	UNKNOWN
ubuntu	20.04	noarch	unzip	< 6.0-25ubuntu1.1	UNKNOWN
ubuntu	22.04	noarch	unzip	< 6.0-26ubuntu3.1	UNKNOWN
ubuntu	23.10	noarch	unzip	< any	UNKNOWN
ubuntu	24.04	noarch	unzip	< any	UNKNOWN
ubuntu	14.04	noarch	unzip	< 6.0-9ubuntu1.6+esm1	UNKNOWN
ubuntu	16.04	noarch	unzip	< 6.0-20ubuntu1.1+esm1	UNKNOWN