CVE-2021-4217

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
3.3 LOW
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 43%
Affected Products (NVD)
VendorProductVersion
unzip_projectunzip
6.0
redhatenterprise_linux
6.0
redhatenterprise_linux
7.0
redhatenterprise_linux
8.0
redhatenterprise_linux
9.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
unzip
bookworm
unimportant
bullseye
unimportant
bullseye (security)
unimportant
sid
unimportant
trixie
unimportant
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
unzip
bionic
Fixed 6.0-21ubuntu1.2
released
focal
Fixed 6.0-25ubuntu1.1
released
impish
ignored
jammy
Fixed 6.0-26ubuntu3.1
released
kinetic
ignored
lunar
ignored
mantic
ignored
noble
needed
trusty
Fixed 6.0-9ubuntu1.6+esm1
released
xenial
Fixed 6.0-20ubuntu1.1+esm1
released
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
unzip
Amazon Linux 2
0:6.0-57.amzn2.0.1
fixed
Amazon Linux 2023
0:6.0-57.amzn2023.0.2
fixed
unzip-debuginfo
Amazon Linux 2
0:6.0-57.amzn2.0.1
fixed
Amazon Linux 2023
0:6.0-57.amzn2023.0.2
fixed
unzip-debugsource
Amazon Linux 2023
0:6.0-57.amzn2023.0.2
fixed
Azure Linux logo
Azure Linux Releases
Azure Package
Release
unzip
Azure Linux 3.0
0:6.0-22.azl3
fixed
CBL-Mariner 1.0
0:6.0-19.cm1
fixed
CBL-Mariner 2.0
0:6.0-22.cm2
fixed
Common Weakness Enumeration
References
https://access.redhat.com/security/cve/CVE-2021-4217
https://bugs.launchpad.net/ubuntu/+source/unzip/+bug/1957077
https://bugzilla.redhat.com/show_bug.cgi?id=2044583
https://access.redhat.com/security/cve/CVE-2021-4217
https://bugs.launchpad.net/ubuntu/+source/unzip/+bug/1957077
https://bugzilla.redhat.com/show_bug.cgi?id=2044583