CVE-2021-31924 Detail
Modified
This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes. DescriptionYubico pam-u2f before 1.1.1 has a logic issue that, depending on the pam-u2f configuration and the application used, could lead to a local PIN bypass. This issue does not allow user presence (touch) or cryptographic signature verification to be bypassed, so an attacker would still need to physically possess and interact with the YubiKey or another enrolled authenticator. If pam-u2f is configured to require PIN authentication, and the application using pam-u2f allows the user to submit NULL as the PIN, pam-u2f will attempt to perform a FIDO2 authentication without PIN. If this authentication is successful, the PIN requirement is bypassed. Metrics
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 3.x Severity and Vector Strings:
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Known Affected Software Configurations Switch to CPE 2.2 Configuration 1 ( hide )
Configuration 2 ( hide )
Denotes Vulnerable Software Quick InfoCVE Dictionary Entry:CVE-2021-31924 NVD Published Date: 05/25/2021 NVD Last Modified: 11/21/2024 Source: MITRE |
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