CVE-2021-4217

unzip: Null pointer dereference in Unicode strings code

Published Aug 24, 2022 CVSS 3.1 · 3.3 Low EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-34075 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.
Ubuntu USN Ubuntu USN USN-5673-1 unzip vulnerabilities
Ubuntu USN Ubuntu USN USN-7054-1 unzip vulnerability
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Metrics epss

{'score': 0.00134}

epss

{'score': 0.00138}

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Nov 2, 2026, 6:11 PM
Reserved
Jan 27, 2022, 12:00 AM
Status
Modified
Published
Aug 24, 2022, 4:15 PM
Modified
Nov 2, 2026, 7:17 PM
Severity
Low
Public date
Jan 14, 2022, 12:00 AM