CVE-2021-1492
6.6 · MEDIUMOverview
CVE-2021-1492 is a medium-severity vulnerability affecting duo authentication_proxy. It was published on March 25, 2021 and has a CVSS 3.1 base score of 6.6 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.6, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from duo. Update authentication_proxy to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| duo | authentication_proxy | >= 0, < 5.2.1 | Affected |
Frequently Asked Questions
What is CVE-2021-1492?
CVE-2021-1492 is a medium-severity vulnerability affecting duo authentication_proxy. It was published on March 25, 2021 and has a CVSS 3.1 base score of 6.6 (MEDIUM).
How severe is CVE-2021-1492?
This vulnerability has a CVSS 3.1 base score of 6.6, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-1492?
Check the references section for vendor advisories and patches from duo. Update authentication_proxy to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-1492?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-1492 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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