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CVE-2021-4287

Date: December 27, 2022

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.

Language: Python

Severity Score

Related Resources (9)

https://vuldb.com/?ctiid.216876
https://vuldb.com/?id.216876
https://github.com/ReFirmLabs/binwalk/commit/fa0c0bd59b8588814756942fe4cb5452e76c1dcd
https://github.com/ReFirmLabs/binwalk
https://nvd.nist.gov/vuln/detail/CVE-2021-4287
https://security-tracker.debian.org/tracker/CVE-2021-4287
https://github.com/ReFirmLabs/binwalk/pull/556
https://github.com/ReFirmLabs/binwalk/releases/tag/v2.3.3
https://www.mend.io/vulnerability-database/CVE-2021-4287

Severity Score

Weakness Type (CWE)

Improper Link Resolution Before File Access ('Link Following')

CWE-59

UNIX Symbolic Link (Symlink) Following

CWE-61

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): LOW

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