CVE-2021-4217

CWE-476 — NULL Pointer Dereference10 documents8 sources
Severity
3.3LOW
EPSS
0.2%
top 58.52%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Fedoraproject FedoraRedhat Enterprise LinuxUnzip Project Unzip
Timeline
PublishedAug 24
Latest updateOct 3

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:LExploitability: 1.8 | Impact: 1.4

Affected Packages3 packages

▶Ubuntuunzip< 6.0-21ubuntu1.2+4
▶CVEListV5unzipunzip 6.0

Also affects: Fedora 35, Enterprise Linux 6.0, 7.0, 8.0, 9.0

Patches

Patch: bugs.launchpad.net ↗Patch: bugs.launchpad.net ↗

🔴Vulnerability Details

4
OSV
unzip vulnerabilities↗2022-10-13
▶
GHSA
GHSA-9xxw-h585-3vfj: A flaw was found in unzip↗2022-08-25
▶
CVEList
CVE-2021-4217: A flaw was found in unzip↗2022-08-24
▶
OSV
CVE-2021-4217: A flaw was found in unzip↗2022-08-24
▶

📋Vendor Advisories

5
Ubuntu
unzip vulnerability↗2024-10-03
▶
Ubuntu
unzip vulnerabilities↗2022-10-13
▶
Microsoft
The vulnerability in unzip occurs due to improper handling of Unicode strings↗2022-08-09
▶
Red Hat
unzip: Null pointer dereference in Unicode strings code↗2022-01-14
▶
Debian
CVE-2021-4217: unzip - A flaw was found in unzip. The vulnerability occurs due to improper handling of ...↗2021
▶