CVE-2021-1492: duo authentication proxy

csirt@kutim:~/threat-intel/cve/CVE-2021-1492

CVSS 7.1 · High EPSS 0,27%

Kerentanan Windows Shortcut Following (.LNK) pada duo authentication proxy. Skor CVSS 3.1 7.1 (High) menurut NVD.

Deskripsi (NVD)

The Duo Authentication Proxy installer prior to 5.2.1 did not properly validate file installation paths. This allows an attacker with local user privileges to coerce the installer to write to arbitrary privileged directories. If successful, an attacker can manipulate files used by Duo Authentication Proxy installer, cause Denial of Service (DoS) by deleting file(s), or replace system files to potentially achieve elevation of privileges. This is only exploitable during new installations, while the installer is running, and is not exploitable once installation has finished. Versions 5.2.1 of Duo Authentication Proxy installer addresses this issue.

Rincian

Terbit di NVD: 25 Maret 2021
Terakhir diubah: 17 Juni 2026
Status NVD: Modified
CVSS 3.1: 7.1 (High), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-64: Windows Shortcut Following (.LNK)
EPSS (30 hari): 0,27% peluang dieksploitasi; lebih tinggi dari 17,6% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
duo	authentication proxy	Semua versi sebelum 5.2.1

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://help.duo.com/s/article/6789 advisory vendor

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.