CVE-2021-4287: microsoft binwalk

csirt@kutim:~/threat-intel/cve/CVE-2021-4287

CVSS 6.5 · Medium EPSS 2,0%

Kerentanan UNIX Symbolic Link (Symlink) Following pada microsoft binwalk. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD: 27 Desember 2022
Terakhir diubah: 17 Juni 2026
Status NVD: Modified
CVSS 3.1: 6.5 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-61: UNIX Symbolic Link (Symlink) Following
CWE-59: Improper Link Resolution Before File Access ('Link Following')
EPSS (30 hari): 2,0% peluang dieksploitasi; lebih tinggi dari 80,6% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
microsoft	binwalk	Semua versi sebelum 2.3.3

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://github.com/ReFirmLabs/binwalk/commit/fa0c0bd59b8588814756942fe4cb5452e76c1dcd patch · advisory pihak ketiga
https://github.com/ReFirmLabs/binwalk/pull/556 patch · advisory pihak ketiga
https://github.com/ReFirmLabs/binwalk/releases/tag/v2.3.3 release notes · advisory pihak ketiga
https://vuldb.com/?ctiid.216876 advisory pihak ketiga
https://vuldb.com/?id.216876 advisory pihak ketiga

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.