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GHSA-g672-w7xh-qp9j

Опубликовано: 15 апр. 2026
Источник: github
Github: Не прошло ревью
CVSS3: 5.5

Описание

A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS).

A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS).

EPSS

Процентиль: 3%
0.00135
Низкий

5.5 Medium

CVSS3

Дефекты

CWE-805

Связанные уязвимости

CVSS3: 5.5
ubuntu
5 месяцев назад

A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS).

CVSS3: 5.5
redhat
5 месяцев назад

A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS).

CVSS3: 5.5
nvd
5 месяцев назад

A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS).

CVSS3: 5.5
debian
5 месяцев назад

A flaw was found in the System Security Services Daemon (SSSD). The pa ...

CVSS3: 5.5
fstec
5 месяцев назад

Уязвимость функции pam_passkey_child_read_data() компонента src/responder/pam/pamsrv_passkey.c сервиса управления доступом к удаленным каталогам и механизма аутентификации SSSD, позволяющая нарушителю вызвать отказ в обслуживании

EPSS

Процентиль: 3%
0.00135
Низкий

5.5 Medium

CVSS3

Дефекты

CWE-805