Описание
Yubico 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.
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | ignored | end of standard support, was needs-triage |
| devel | not-affected | 1.4.0-1 |
| esm-apps/bionic | not-affected | 1.0.4-2 |
| esm-apps/focal | not-affected | 1.0.8-1 |
| esm-apps/jammy | not-affected | 1.1.0-1.1build1 |
| esm-apps/noble | not-affected | 1.1.0-1.1build3 |
| esm-apps/xenial | not-affected | 1.0.3-1 |
| esm-infra-legacy/trusty | DNE | |
| focal | ignored | end of standard support, was needs-triage |
| groovy | ignored | end of life |
Показывать по
EPSS
4.6 Medium
CVSS2
6.8 Medium
CVSS3
Связанные уязвимости
Yubico 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.
Yubico pam-u2f before 1.1.1 has a logic issue that, depending on the p ...
Yubico 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.
Уязвимость модуля аутентификации PAM-U2F, связанная с недостатками процедуры аутентификации, позволяющая нарушителю получить доступ к конфиденциальным данным, нарушить их целостность, а также вызвать отказ в обслуживании
EPSS
4.6 Medium
CVSS2
6.8 Medium
CVSS3