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MEDIUM · 6.6

CVE-2020-3427

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 privilege...

Vulnerability 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.

CVSS Score

6.6

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE

Affected Products

VendorProductVersions
CiscoDuo Authentication For Windows Logon And Rdp< 4.1.2

Related Weaknesses (CWE)

CWE-280

References

FAQ

What is CVE-2020-3427?

CVE-2020-3427 is a vulnerability with a CVSS score of 6.6 (MEDIUM). 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 privilege...

How severe is CVE-2020-3427?

CVE-2020-3427 has been rated MEDIUM with a CVSS base score of 6.6/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-3427?

Check the references section above for vendor advisories and patch information. Affected products include: Cisco Duo Authentication For Windows Logon And Rdp.