CVE-2020-3427
6.6 · MEDIUMOverview
CVE-2020-3427 is a medium-severity vulnerability affecting cisco duo_authentication_for_windows_logon_and_rdp. It was published on October 14, 2020 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 Windows Logon installer prior to 4.1.2 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 Windows Logon, cause Denial of Service (DoS) by deleting file(s), or replace system files to potentially achieve elevation of privileges. Note that this can only exploitable during new installations while the installer is running and is not exploitable once installation is finished. Versions 4.1.2 of Windows Logon addresses this issue.
Remediation
Check the references section for vendor advisories and patches from cisco. Update duo_authentication_for_windows_logon_and_rdp 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 |
|---|---|---|---|
| cisco | duo_authentication_for_windows_logon_and_rdp | >= 0, < 4.1.2 | Affected |
Frequently Asked Questions
What is CVE-2020-3427?
CVE-2020-3427 is a medium-severity vulnerability affecting cisco duo_authentication_for_windows_logon_and_rdp. It was published on October 14, 2020 and has a CVSS 3.1 base score of 6.6 (MEDIUM).
How severe is CVE-2020-3427?
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-2020-3427?
Check the references section for vendor advisories and patches from cisco. Update duo_authentication_for_windows_logon_and_rdp 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-2020-3427?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-3427 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
AI agents map your attack surface to find vulnerabilities like this one.
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