# CVE-2021-4287: binwalk: A vulnerability, which was classified as problematic, was found in ReFirm Labs binwalk up to 2.3.2

CVE-2021-4287 is fixed in binwalk on 1 platform, first by DEBIAN-CVE-2021-4287, released December 27, 2022. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-4287
- Priority: Routine
- CVSS: 6.5 (medium)
- EPSS: 0.0215
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 27, 2022

## Description

A vulnerability, which was classified as problematic, was found in ReFirm Labs binwalk up to 2.3.2. Affected is an unknown function of the file src/binwalk/modules/extractor.py of the component Archive Extraction Handler. The manipulation leads to symlink following. It is possible to launch the attack remotely. Upgrading to version 2.3.3 is able to address this issue. The name of the patch is fa0c0bd59b8588814756942fe4cb5452e76c1dcd. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-216876.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | binwalk Debian 12.15 (bookworm) | 2.3.3+dfsg1-1 | [DEBIAN-CVE-2021-4287](https://patchblox.com/security/data/fix/linux/debian-cve-2021-4287.md) | Dec 27, 2022 |
| Linux | binwalk Debian 13.5 (trixie) | 2.3.3+dfsg1-1 | [DEBIAN-CVE-2021-4287](https://patchblox.com/security/data/fix/linux/debian-cve-2021-4287.md) | Dec 27, 2022 |
| Linux | binwalk Debian 14 | 2.3.3+dfsg1-1 | [DEBIAN-CVE-2021-4287](https://patchblox.com/security/data/fix/linux/debian-cve-2021-4287.md) | Dec 27, 2022 |

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