CVE-2020-11005CWE-288

Internal NCryptDecrypt method could be used externally from WindowsHello library.

Medium · published April 14, 2020

CVSS v3.1
5.1
EPSS
0%
Percentile
13.5
In the wild
Unconfirmed
What it is

The WindowsHello open source library (NuGet HaemmerElectronics.SeppPenner.WindowsHello), before version 1.0.4, has a vulnerability where encrypted data could potentially be decrypted without needing authentication. If the library is used to encrypt text and write the output to a txt file, another executable could be able to decrypt the text using the static method NCryptDecrypt from this same library without the need to use Windows Hello Authentication again. This has been patched in version 1.0.4.

The record
Technical detail
CVSS v3.1
5.1 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00234 · 13.5th percentile
Weakness
CWE-288 · Authentication Bypass Using an Alternate Path or Channel
Published
2020-04-14T22:30Z
EPSS history
Timeline
  • 14 APR 22:30Z
    Internal NCryptDecrypt method could be used externally from WindowsHello library.
    cvelistv5