CVE-2021-1492

Duo Authentication Proxy Installer Denial of Service Vulnerability

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.

Category

6.6
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory duo.com
Affected: Cisco Duo Authentication Proxy
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2021-1492?
CVE-2021-1492 has been scored as a medium severity vulnerability.
How to fix CVE-2021-1492?
To fix CVE-2021-1492, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-1492 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-1492 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-1492?
CVE-2021-1492 affects Cisco Duo Authentication Proxy.
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