Improper access control in Yubico YubiKey 5 Series



Published: 2020-07-09
Risk Low
Patch available NO
Number of vulnerabilities 1
CVE-ID CVE-2020-15000
CWE-ID CWE-284
Exploitation vector Local
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
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YubiKey 5 Series
Hardware solutions / Other hardware appliances

Vendor Yubico

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper access control

EUVDB-ID: #VU29613

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L/E:P/RL:U/RC:C]

CVE-ID: CVE-2020-15000

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a local attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions within the OpenPGP application. A local attacker can use a Resetting code password to reset the User PIN.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

YubiKey 5 Series: 5.2.0 - 5.2.6


CPE2.3 External links

http://www.yubico.com/support/security-advisories/ysa-2020-05

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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