Описание
A flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to connect to the PAM (Pluggable Authentication Modules) responder socket can send a specially crafted protocol request. If the pam_app_services configuration is enabled and the service item is omitted from the request, a NULL pointer dereference can occur. This vulnerability leads to a denial of service, causing the PAM responder to crash and disrupt authentication services.
Отчет
This Moderate impact denial of service vulnerability in SSSD's PAM responder requires local access and a non-default pam_app_services configuration. An authenticated local attacker can send a crafted PAM request, leading to a NULL pointer dereference and crashing the PAM responder, thereby disrupting authentication services. The default SSSD configuration is not affected.
Меры по смягчению последствий
To mitigate this issue, avoid configuring pam_app_services in the [pam] section of /etc/sssd/sssd.conf if it is not operationally required. If pam_app_services is configured, remove or comment out the pam_app_services line and restart the sssd service.
Example:
After modifying the configuration, restart the SSSD service:
systemctl restart sssd
Note that restarting the SSSD service may temporarily interrupt authentication and authorization services.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | sssd | Fix deferred | ||
| Red Hat Enterprise Linux 6 | sssd | Out of support scope | ||
| Red Hat Enterprise Linux 7 | sssd | Fix deferred | ||
| Red Hat Enterprise Linux 8 | sssd | Fix deferred | ||
| Red Hat Enterprise Linux 9 | sssd | Fix deferred | ||
| Red Hat OpenShift Container Platform 4 | openshift/ose-rhel-coreos-8 | Fix deferred | ||
| Red Hat OpenShift Container Platform 4 | openshift/ose-rhel-coreos-9 | Fix deferred |
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Дополнительная информация
Статус:
5.5 Medium
CVSS3
Связанные уязвимости
A flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to connect to the PAM (Pluggable Authentication Modules) responder socket can send a specially crafted protocol request. If the `pam_app_services` configuration is enabled and the service item is omitted from the request, a NULL pointer dereference can occur. This vulnerability leads to a denial of service, causing the PAM responder to crash and disrupt authentication services.
A flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to connect to the PAM (Pluggable Authentication Modules) responder socket can send a specially crafted protocol request. If the `pam_app_services` configuration is enabled and the service item is omitted from the request, a NULL pointer dereference can occur. This vulnerability leads to a denial of service, causing the PAM responder to crash and disrupt authentication services.
A flaw was found in SSSD (System Security Services Daemon). A local at ...
A flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to connect to the PAM (Pluggable Authentication Modules) responder socket can send a specially crafted protocol request. If the `pam_app_services` configuration is enabled and the service item is omitted from the request, a NULL pointer dereference can occur. This vulnerability leads to a denial of service, causing the PAM responder to crash and disrupt authentication services.
5.5 Medium
CVSS3