CVE-2021-4217

Severity Score

3.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Se ha encontrado un fallo en unzip. La vulnerabilidad es producida debido a un manejo inapropiado de las cadenas Unicode, que puede conllevar a una desreferencia de puntero null. Este fallo permite a un atacante introducir un archivo zip especialmente diseñado, lo que conlleva a un fallo o la ejecución de código

*Credits: N/A

CVSS Scores

NISTv3.1 3.3

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-01-27 CVE Reserved
2022-08-24 CVE Published
2024-08-03 CVE Updated
2024-08-03 First Exploit
2024-11-15 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (3)

URL	Tag	Source
https://access.redhat.com/security/cve/CVE-2021-4217	Third Party Advisory

URL	Date	SRC
https://bugs.launchpad.net/ubuntu/+source/unzip/+bug/1957077	2024-08-03
https://bugzilla.redhat.com/show_bug.cgi?id=2044583	2024-08-03

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Unzip Project Search vendor "Unzip Project"		Unzip Search vendor "Unzip Project" for product "Unzip"				6.0 Search vendor "Unzip Project" for product "Unzip" and version "6.0"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				35 Search vendor "Fedoraproject" for product "Fedora" and version "35"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				6.0 Search vendor "Redhat" for product "Enterprise Linux" and version "6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				7.0 Search vendor "Redhat" for product "Enterprise Linux" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				9.0 Search vendor "Redhat" for product "Enterprise Linux" and version "9.0"		-		Affected