unzip: A flaw was found in unzip
CVE-2021-4217 is fixed in 3 products on 1 platform, first by unzip 6.0-21ubuntu1.2, released August 24, 2022. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| unzip · Ubuntu 18.04.6 LTS (bionic) | 6.0-21ubuntu1.2 | unzip 6.0-21ubuntu1.2 | Aug 24, 2022 |
| unzip · Ubuntu 20.04 LTS (focal) | 6.0-25ubuntu1.1 | unzip 6.0-25ubuntu1.1 | Aug 24, 2022 |
| unzip · Ubuntu 22.04.1 LTS (jammy) | 6.0-26ubuntu3.1 | unzip 6.0-26ubuntu3.1 | Aug 24, 2022 |
| unzip · Ubuntu 24.04.5 LTS (noble) | 6.0-28ubuntu4.1 | unzip 6.0-28ubuntu4.1 | Aug 24, 2022 |
| unzip · amzn 2023 | 6.0-57.amzn2023.0.2 | ALAS2023-2023-029 | Feb 17, 2023 |
| unzip-debuginfo · amzn 2023 | 6.0-57.amzn2023.0.2 | ALAS2023-2023-029 | Feb 17, 2023 |
| unzip-debugsource · amzn 2023 | 6.0-57.amzn2023.0.2 | ALAS2023-2023-029 | Feb 17, 2023 |
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