CVE-2021-1492 Details

CVE-2021-1492

Published: 2021-03-25
Last Modified: 2021-03-27
CVE Author: NIST National Vulnerability Database
CVE Assigner: psirt@cisco.com
Summary

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.

Analysis
Common Vulnerability Score System v2.0
Severity Low
Base Score 3.6/10
Exploit Score 3.9/10
Access Vector Local
Access Complexity Low
Authentication None
Impact Score 4.9/10
Confidentiality Impact None
Availability Impact Partial
Integrity Impact Partial
Vector String AV:L/AC:L/Au:N/C:N/I:P/A:P
Common Vulnerability Score System v3.1
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
Vector String CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Products Reported
CPE Vulnerable Start Excluding
References

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

CVE ID
CVE-2021-1492
Published
2021-03-25
Modified
2021-03-27
CVSSv2.0
Low
CVSSv3.1
High
PCI Compliance
Fail
US-CERT Alert
No
CWE
CWE-64

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