CVE-2021-4217

LOW

unzip - Null Pointer Dereference via Unicode String Handling

Title source: llm

Description

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.

References (3)

Core 3

Core References

Exploit, Issue Tracking, Patch, Third Party Advisory x_refsource_misc

https://bugs.launchpad.net/ubuntu/+source/unzip/+bug/1957077

Exploit, Issue Tracking, Third Party Advisory x_refsource_misc

https://bugzilla.redhat.com/show_bug.cgi?id=2044583

Third Party Advisory x_refsource_misc

https://access.redhat.com/security/cve/CVE-2021-4217

Scores

CVSS v3 3.3

EPSS 0.0019

EPSS Percentile 41.1%

Attack Vector LOCAL

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

Details

CWE

CWE-476

Status published

Products (6)

fedoraproject/fedora 35

redhat/enterprise_linux 6.0

redhat/enterprise_linux 7.0

redhat/enterprise_linux 8.0

redhat/enterprise_linux 9.0

unzip_project/unzip 6.0

Published Aug 24, 2022

Tracked Since Feb 18, 2026