NULL Pointer Dereference Affecting unzip package, versions <6.0-21ubuntu1.2


Severity

Recommended
0.0
low
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.62% (49th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-UBUNTU1804-UNZIP-2387714
  • published29 Jan 2022
  • disclosed24 Aug 2022

Introduced: 29 Jan 2022

CVE-2021-4217  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Ubuntu:18.04 unzip to version 6.0-21ubuntu1.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream unzip package and not the unzip package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

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 Base Scores

version 3.1