CVE-2020-11005

Internal NCryptDecrypt method could be used externally from WindowsHello library.

Description

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.

Categories

5.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.02%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: SeppPenner WindowsHello
Published at:
Updated at:

References

Link Tags
https://github.com/SeppPenner/WindowsHello/security/advisories/GHSA-wvpv-ffcv-r6cw third party advisory
https://github.com/SeppPenner/WindowsHello/issues/3 third party advisory issue tracking

Frequently Asked Questions

What is the severity of CVE-2020-11005?
CVE-2020-11005 has been scored as a medium severity vulnerability.
How to fix CVE-2020-11005?
To fix CVE-2020-11005, 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-2020-11005 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-11005 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-2020-11005?
CVE-2020-11005 affects SeppPenner WindowsHello.
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