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CVE-2021-1492

Published

3 years ago

Last Modified

3 years ago

CVSSv2.0 Severity

Low

CVSSv3.1 Severity

High

Impact Analysis

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..

CVSSv2.0 Score

Severity: Low
Base Score: 3.6/10
Exploit Score: 3.9/10
Access Vector: Local
Access Complexity: Low
Authentication Required: None
Impact Score: 4.9/10
Confidentiality Impact: None
Availability Impact: Partial
Integrity Impact: Partial

CVSSv3.1 Score

Severity: High
Base Score: 7.1/10
Exploit Score: 1.8/10
Access Vector: Local
Access Complexity: Low
Privileges Required: Low
Impact Score: 5.2/10
Confidentiality Impact: None
Availability Impact: High
Integrity Impact: High
Scope: Unchanged
User Interaction: None

Products Affected

CPE	Affected	Vulnerable	Excluding	Edit
cpe:2.3:a:duo:authentication_proxy::::::::	Yes	-	5.2.1
cpe:2.3:o:microsoft:windows:-:::::::*	No		-

References

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