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CVE-2021-1492

nvd nist
Published: Mar 25, 2021Modified: Jun 17, 2026

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7.1
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Exploitability: 1.8 / Impact: 5.2
Source: NVD

Description

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.

Affected (1)

Duo
1 product
Authentication Proxy
Configuration A
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Authentication Proxy
Before 5.2.1
Running on/withPlatform Versions
Microsoft
Windows
All versions

Related CWEs

CWE-64
Windows Shortcut Following (.LNK)
The product, when opening a file or directory, does not sufficiently handle when the file is a Windows shortcut (.LNK) whose target is outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files.

References (2)

Source: psirt@cisco.com
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory

Timeline

No history available yet.