CVE-2021-4287

MEDIUM

ReFirm Labs binwalk <2.3.2 - Symlink Following

Title source: llm
STIX 2.1

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.

References (5)

Core 5
Core References
Third Party Advisory vdb-entry
https://vuldb.com/?id.216876
Third Party Advisory signature permissions-required
https://vuldb.com/?ctiid.216876
Patch, Third Party Advisory issue-tracking
https://github.com/ReFirmLabs/binwalk/pull/556
Release Notes, Third Party Advisory patch
https://github.com/ReFirmLabs/binwalk/releases/tag/v2.3.3

Scores

CVSS v3 5.0
EPSS 0.0193
EPSS Percentile 77.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-61 CWE-59
Status published
Products (2)
microsoft/binwalk < 2.3.3
pypi/binwalk 0 - 2.3.3PyPI
Published Dec 27, 2022
Tracked Since Feb 18, 2026